Malicious PDF — malware analysis report

Static analysis result for SHA-256 94839d0a6975a152…

MALICIOUS

PDF

68.9 KB Created: 2020-11-23 18:00:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f6faf8ee4760e75cc4be29d2632772cd SHA-1: e7397d20af879aee9031f221e7d4abc887fd77e2 SHA-256: 94839d0a6975a152eb8280da004996c776247804707f6b15b8faad22cf3b7917
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, characteristic of a link farm designed to drive traffic to potentially malicious sites. The primary URL suggests a phishing lure related to a popular religious text, aiming to trick users into clicking through. ClamAV detection and ML classification strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafffi.ru/strik?utm_term=bhagavad+gita+chapter+12+pdf+in+telugu
    • https://duroxogudoli.weebly.com/uploads/1/3/4/3/134318703/bf3500.pdf
    • https://cdn-cms.f-static.net/uploads/4375504/normal_5f8d8c862a300.pdf
    • https://jufozovujibozom.weebly.com/uploads/1/3/4/3/134360308/sibejuduxo_xubadiwoluzefux_gexuxunewado_fimewu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/9981df36-0372-4e12-a45c-6c6471636ee4/glacial_hammer_build.pdf
    • https://uploads.strikinglycdn.com/files/7465d27b-8da4-414d-a1f2-a957562cb7f8/luvig.pdf
    • https://s3.amazonaws.com/tarajix/death_note_l_real_name.pdf
    • https://uploads.strikinglycdn.com/files/f09cc8ab-2bcd-4e53-8985-7e696296339c/ganukowela.pdf
    • https://s3.amazonaws.com/zumomasugipeno/24_2019_psc_answer_key.pdf
    • https://s3.amazonaws.com/panalipolifod/sasojazeromesurerolase.pdf
    • https://s3.amazonaws.com/bejexe/8978744011.pdf
    • https://s3.amazonaws.com/modowor/59234998770.pdf
    • https://s3.amazonaws.com/lekizopiloref/pekedoj.pdf
    • https://s3.amazonaws.com/xanebavifamopez/pakomavikipix.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c369.bin
508955ceb1a861b62fccf92f840279c9a777a16d4839bfd9e630937738d47edd
pdf-font-stream PDF embedded font (sfnt) at offset 0xC369 2972 bytes
font_01_sfnt_off0000ce12.bin
06dd13864925391c6023ae8668987281f6df04a85e661b1185d1a8eaa72a20b1
pdf-font-stream PDF embedded font (sfnt) at offset 0xCE12 5532 bytes
font_02_sfnt_off0000e0f8.bin
87bc3114ae48dde252c0b12fc57b504ec98b0e18317e0cd0d1397e5cad10fbda
pdf-font-stream PDF embedded font (sfnt) at offset 0xE0F8 11676 bytes