Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2a82ae444a8bea3…

MALICIOUS

PDF

79.6 KB Created: 2021-01-08 05:02:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 1a9ff4a6e0e8a7c8159391e24988a7c0 SHA-1: 360dcc0a9210875ff7ebe36425870024257f382f SHA-256: f2a82ae444a8bea3b5b84b459de38c912bf6436073d25dfec36bb124b6c2ab67
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, identified as a link farm, pointing to various PDF files hosted on Weebly and other platforms. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure and numerous external links suggest an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://traffine.ru/123?utm_term=silver+floss+sauerkraut+can PDF link annotation
    • https://famuzupowaja.weebly.com/uploads/1/3/1/4/131406758/4081533.pdfIn PDF document text
    • https://cdn.sqhk.co/gixejefi/zhbVLhf/tefamufobimakovewiz.pdfIn PDF document text
    • https://cdn.sqhk.co/rarirawibowo/ighcjbH/ocean_survival_gameplay.pdfIn PDF document text
    • https://burivoren.weebly.com/uploads/1/3/4/2/134265934/damiwalisef.pdfIn PDF document text
    • https://wekimede.weebly.com/uploads/1/3/4/8/134862148/4261096.pdfIn PDF document text
    • https://mikixobitesa.weebly.com/uploads/1/3/0/7/130776626/2506600.pdfIn PDF document text
    • https://cdn.sqhk.co/tavimuxeju/aHif5xP/hammer_it_smash_hit_game.pdfIn PDF document text
    • https://tudexabi.weebly.com/uploads/1/3/4/7/134770635/muzes_nibadovem_nijupax.pdfIn PDF document text
    • https://cdn.sqhk.co/lakisitu/Lgc4B0B/lozisugigodagawit.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wiremeresegikon/shazam_apkpure.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://scripts.sil.org/OFLIn 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_off0000e190.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE190 5104 bytes
SHA-256: e0d4b87efaafc37a029278d211390c1a9fce03f702aea65ee011667c1db86ef3
font_01_sfnt_off0000f304.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF304 10972 bytes
SHA-256: 535614b63765cabb5a227b3177e9ee8aa94baa5d41a2806de5cae944ff32874f
font_02_sfnt_off000118b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118B1 17192 bytes
SHA-256: 912e3c8dd5d22db7f0e16d519bac2802439bdd609fc19c1ae8ae27c2db40966c

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