Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d2949f119d7dd20…

MALICIOUS

PDF

88.7 KB Created: 2020-11-29 03:21:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 9ab357e649a7a420cfd1e2a4c7684a6e SHA-1: 12d729924e106a2a72056dd5b4a7ee924989e050 SHA-256: 2d2949f119d7dd2003e30bce0209a9b381edde1a769f816bec851904f09a2338
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external links, with a critical heuristic firing for a 'PDF_SEO_LINK_FARM'. The presence of multiple Weebly URLs suggests an attempt to host malicious content or redirect users. ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious classification. Although no scripts were explicitly extracted, the PDF structure and link farm indicate a malicious intent, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffnew.ru/aws?utm_term=bhagvan+kannada+movie+songs+free PDF link annotation
    • https://sopulekazixov.weebly.com/uploads/1/3/0/7/130776801/povumino.pdfIn PDF document text
    • https://vepezifu.weebly.com/uploads/1/3/4/2/134265798/vatarupexoni_vixaxadisogi_lofiboxepu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451766/normal_5fc2efabec7a1.pdfIn PDF document text
    • https://tokoxiwo.weebly.com/uploads/1/3/4/3/134352544/wiginepevejuxeli.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/bitajemisajoz/jonutesevaxoke.pdfIn PDF document text
    • https://s3.amazonaws.com/jolituzoji/pakolufuxetakexun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28a6dee5-0d60-4131-8ecc-e0b5a506ebed/viponiwuxeselariladefir.pdfIn PDF document text
    • https://s3.amazonaws.com/rujimidujek/40431661466.pdfIn PDF document text
    • https://s3.amazonaws.com/puretulenuza/super_mario_advance_rom_wowroms.pdfIn PDF document text
    • https://s3.amazonaws.com/popagexexoza/vowunemabugexenu.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC96 5464 bytes
SHA-256: be846a285c738354b58e2be3e4648a8ae99b8f35082231544a05e9193f620f0c
font_01_sfnt_off0000ff0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF0B 2428 bytes
SHA-256: 8e62f17d47f997b9cf5b79029b01466ef55eb61334a1788cfc5684417518118a
font_02_sfnt_off00010a0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A0B 11152 bytes
SHA-256: 375aedf9cd17bfe0e7d0b806b24bf85f1639d8183ac538641a194b8a70a2dc81
font_03_sfnt_off00013041.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13041 21800 bytes
SHA-256: 615110a183b4a18a9762de596161a66acbec1c3f57e12b94bd1e557a94b0d97c

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