Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e61004b54300353…

MALICIOUS

PDF

68.6 KB Created: 2021-09-28 14:47:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 5039879526c8325ccbdfdd1e0b32cacd SHA-1: b5ff8ebedea9d5eb31c3a24f17af77978adfbbdf SHA-256: 2e61004b54300353b083ca264c239848f71a4d6d6550fea163059ca098578544
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF exhibits characteristics of a phishing lure, including being image-heavy with minimal text and containing numerous external links. The presence of multiple links pointing to compromised WordPress sites and disposable hosting suggests an attempt to distribute malicious content or redirect users to phishing pages. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate malicious intent, likely involving the exploitation of user trust via a deceptive interface.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 68 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://archism.ru/uplcv?utm_term=jinde+meriye+full+movie+parmish+verma+online PDF link annotation
    • http://richmediahouse.com/admin/uploads/file/dowowenugoxib.pdfIn PDF document text
    • https://www.dynasil.com/wp-content/plugins/super-forms/uploads/php/files/140666c04a35dc267e3425a4c470d3bb/nawobadabaguparexirixozo.pdfIn PDF document text
    • https://31app.com/userfiles/file/69323200380.pdfIn PDF document text
    • https://otdelkamos.ru/wp-content/plugins/super-forms/uploads/php/files/0cd7522918eea573a4b8083a38027153/65154677219.pdfIn PDF document text
    • http://aguito.madteam.net/ckfinder/userfiles/files/zobegexosamobojizuxado.pdfIn PDF document text
    • https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614deb0db8f44---tikanu.pdfIn PDF document text
    • http://gerocuki.hu/user/file/dotanapo.pdfIn PDF document text
    • https://nls.vn/upload/files/sugid.pdfIn PDF document text
    • https://akrmedia.no/ckfinder/userfiles/files/15654531876.pdfIn PDF document text
    • http://foto-klub.dk/userfiles/file/7469089989.pdfIn PDF document text
    • https://km2804.com/ckupload/files/38484762809.pdfIn PDF document text
    • http://www.sauminandy.com/fckimages/file/fujaduvuvajo.pdfIn PDF document text
    • http://hutbephottaihaiphong24h.com/upload/files/2806340789.pdfIn PDF document text
    • http://mikomisushi.com/uploads/files/gezavo.pdfIn PDF document text
    • https://paroles-vives.com/ckfinder/userfiles/files/85174705586.pdfIn PDF document text
    • http://litho-and-co.fr/ckeditor/upload/files/13459295199.pdfIn PDF document text
    • http://anhuizhkj.com/upload_fck/file/2021-9-12/20210912012511939086.pdfIn PDF document text
    • http://roseeskin.com/userfiles/file/20210906130059.pdfIn PDF document text
    • https://elitteaccesorios.com/wp-content/plugins/super-forms/uploads/php/files/32aek48nf66tbkd1nuf3hahvm0/kesito.pdfIn PDF document text
    • https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16144b5e2ae4ac---dubonarew.pdfIn PDF document text
    • https://bandotrading.it/uploads/file/bufujek.pdfIn PDF document text
    • http://dalboncostruzioni.it/userfiles/files/23888327786.pdfIn PDF document text
    • http://giprozdraw.ru/ckfinder/userfiles/files/94792525155.pdfIn PDF document text
    • http://gtlfuelmarine.com/userfiles/file/72177173755.pdfIn PDF document text
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/161329dc966462---11502748007.pdfIn PDF document text
    • 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_off0000afa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFA8 10936 bytes
SHA-256: 6fd3b500a86b6b102fc2793307899e2f97767b2e36e7b9e49768392bf35a26ed
font_01_sfnt_off0000c8cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8CB 14292 bytes
SHA-256: 1c0331c2e865881a9fb778423d24940232803c9a9521c33f1581597faadf9f6a
font_02_sfnt_off0000ec57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC57 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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