Malicious PDF — malware analysis report

Static analysis result for SHA-256 317c15a6fcb34448…

MALICIOUS

PDF

81.0 KB Created: 2021-08-29 19:22:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 72e3f50c7bafaebe6c14b8f3b19d0f83 SHA-1: ef1fd0c2182e809f4fde13b14f079b9cbda34500 SHA-256: 317c15a6fcb3444839f75f1724d777cf06efa6da27806b45e2ad60ba6b9ef6a3
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded URLs, many of which point to compromised CMS uploads or disposable hosting, indicating a link farm designed to redirect users to malicious sites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. No scripts were extracted, and the document body was unreadable, so the rationale is based on the URL analysis and heuristic firings.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 https://rm-parketi.si/uploads/sizolafuluwurulebep.pdf In PDF document text
    • http://hungthanhauto.com/luutru/files/5931134050.pdfIn PDF document text
    • http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/161010a766db71---wosefexusosetuvabe.pdfIn PDF document text
    • http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072de7724a69---xenapofivedudobujojujajox.pdfIn PDF document text
    • https://aromamarketing.md/img/files/rowixeganirovinanidivegu.pdfIn PDF document text
    • http://jfhcoaching.nl/userfiles/files/35064365963.pdfIn PDF document text
    • https://canvasations.com/wp-content/plugins/super-forms/uploads/php/files/08gccdckqi4nhtuaj57e4p5g44/nevovezekaloxijixuwolog.pdfIn PDF document text
    • http://asirius.su/wp-content/plugins/super-forms/uploads/php/files/f62508fd4424687422d73bf727620834/lodufeza.pdfIn PDF document text
    • http://liebherr-tr.com/userfiles/file/47751387638.pdfIn PDF document text
    • http://msamerica.net/clients/873634/File/tuwuvipakaneneriros.pdfIn PDF document text
    • https://fertilizergranulatorprice.com/d/files/44699082048.pdfIn PDF document text
    • https://www.lightingsolutionsal.com/wp-content/plugins/super-forms/uploads/php/files/0a5c8702e50d44805936012938342222/nekawasugo.pdfIn PDF document text
    • https://jiptv.nl/wp-content/plugins/super-forms/uploads/php/files/56jprdprchj1eg25mbnrts9gmm/57887758611.pdfIn PDF document text
    • http://www.consorcio.edu.pe/wp-content/plugins/formcraft/file-upload/server/content/files/160d2eedc34c92---babixarosipujerojumiwama.pdfIn PDF document text
    • https://www.kiteschule-kiel.de/wp-content/plugins/formcraft/file-upload/server/content/files/16084f420a8770---bosapuzobetaku.pdfIn PDF document text
    • http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16093f8602e85f---39161847158.pdfIn PDF document text
    • http://onnetsolution.in/userfiles/file/dusedotilegesotoj.pdfIn PDF document text
    • https://beldaoyun.com/calisma2/files/uploads/14013366202.pdfIn PDF document text
    • http://villapellegrino.it/userfiles/files/xumezivirekimirabagunos.pdfIn PDF document text
    • http://tourister.kr/userfiles/file/kogivat.pdfIn PDF document text
    • http://rotarycochinharbour.org/ci/userfiles/files/bidekileluvifuxosege.pdfIn PDF document text
    • https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/6c78ba9fa160ea209a6f671e9a165f6d/33494021190.pdfIn PDF document text
    • http://prociweb.hu/sites/files/file/99282410964.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=super+trader+make+consistent+profits+in+good+and+bad+markets+pdfPDF 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d302.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD302 18628 bytes
SHA-256: 7245bf6ab497b4b31a16b3cf7201366bd2ef2b75b29d24d2d40334749663050e
font_01_sfnt_off000102a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102A9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011ac0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AC0 11324 bytes
SHA-256: dbf9b7d927fcdbae443b0c00bccef957f58e0afaf0210ae91134c03159c39c6d

Open this report in the interactive analyzer, or submit your own file for analysis.