Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc209fbfb2f2685d…

MALICIOUS

PDF

82.8 KB Created: 2021-07-02 02:26:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: f292cb5de16c0e81ca13de8100f2aeb4 SHA-1: 87b64ad9de0f2774797a8946f2a3ac3ec4b1a2bb SHA-256: cc209fbfb2f2685d56eb2319c3b06ca3d202d37add6126ceb493af7476320037
216 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is classified as malicious, exhibiting characteristics of a phishing lure. The critical heuristic 'SE_SECRET_RECOVERY_LURE' indicates the document attempts to solicit sensitive recovery information from the user. While no scripts were directly extracted, the presence of numerous external links, many pointing to compromised CMS uploads and disposable hosting, suggests a phishing or credential harvesting campaign. The document's structure and link farm behavior align with common phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://accessprecision.com/userfiles/file/junedosujobixemafe.pdf In PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/5418b25b5637688372f4a46593321539/nirerinusuva.pdfIn PDF document text
    • http://mynigaoe.com/upload/file/20210612072453.pdfIn PDF document text
    • https://www.masismarketing.com/wp-content/plugins/super-forms/uploads/php/files/28e928ccfd5500fe122c0b7758013fea/59996028447.pdfIn PDF document text
    • http://suamayin.biz/userfiles/file/75138876532.pdfIn PDF document text
    • http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16072f48369bdb---18632666230.pdfIn PDF document text
    • http://afghansolar.com/userfiles/file/vizinafukoze.pdfIn PDF document text
    • https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/4a9c23a28dc825937b45f00de0054f24/75383683775.pdfIn PDF document text
    • http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/1607a2bd3d27ec---bulaxiganovari.pdfIn PDF document text
    • https://heatingboiler.ca/fck_upload/file/baweso.pdfIn PDF document text
    • http://iglozawiercie.pl/zdjecia/file/wosofonekinijejikorejiles.pdfIn PDF document text
    • https://musikkursus.dk/userfiles/file/33098125806.pdfIn PDF document text
    • https://wpsqld.com.au/wp-content/plugins/super-forms/uploads/php/files/10f4e0088873e872e33f321fcbd79d72/88969326499.pdfIn PDF document text
    • https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/fdf62ef624a7ee9265f6fb237365a685/42335337595.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/c6c8ad5c17e4bd9cd77c2a004e15ea72/vatekuzawupi.pdfIn PDF document text
    • https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/8bb58254c74909ade4decc57ce6ce379/lopitorimubamupidifipiru.pdfIn PDF document text
    • https://markeishahall.com/wp-content/plugins/super-forms/uploads/php/files/0969cb793c69084d676c7b786dddb143/welerapibikisir.pdfIn PDF document text
    • https://anzmrrn.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607b82d8aa13a---jabelusaroleromo.pdfIn PDF document text
    • https://marcuspietrek.de/MARCUS/files/file/mumugufuzumu.pdfIn PDF document text
    • https://jdbailbonds.com/wp-content/plugins/super-forms/uploads/php/files/a63d6fc88b236b419220c96d4cc1e395/zirulozekavurud.pdfIn PDF document text
    • https://csom.cz/wp-content/plugins/super-forms/uploads/php/files/9d0d75d4f834f5cf5490a6d6faf7de47/xakidub.pdfIn PDF document text
    • https://kurtoglumob.com/upload/file/26218766347.pdfIn PDF document text
    • https://studiogreenwich.ru/wp-content/plugins/super-forms/uploads/php/files/1015d281d5279d26cfede5e3cf84970c/majobemugegoxi.pdfIn PDF document text
    • https://alianzatours.com/imagenes/file/xisovol.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=cryptography+and+network+security+seminar+pptPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000deaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEAF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f6c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6C6 11336 bytes
SHA-256: 0d83ecc6bf090f7d556fc2b84953065966ebe9deff33896a5318d6ac06d1e451
font_02_sfnt_off0001112d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1112D 16892 bytes
SHA-256: b0f5e9b12ca08201f12018ab4938c72684ced1531622410420c81c0b09b0fd48

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