Malicious PDF — malware analysis report

Static analysis result for SHA-256 70e496480f7b4ffe…

MALICIOUS

PDF

81.8 KB Created: 2021-03-25 10:22:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a4b69f86c06b67c1a3a094d3d4f1af1f SHA-1: 7bb7ec94e9a202f3c50e5145d39e9b7ada0572f5 SHA-256: 70e496480f7b4ffe345441e49c9e1bfe444a7eb268241b0dbf9721539f02e0b7
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to word meanings, which is likely a pretext to encourage clicking the embedded link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • 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://nipisod.ru/aws?utm_term=latin+and+greek+word+meaning+match
    • http://lnstagramcopyrightcenter.com/dungeons_and_dragons_rules_cyclopediaiiy76.pdf
    • http://notdull-eng.online/zaxavomofafupazoburaj7mu1h.pdf
    • https://cdn-cms.f-static.net/uploads/4452588/normal_6019834b7386c.pdf
    • https://cdn-cms.f-static.net/uploads/4456128/normal_603d407d2d8f9.pdf
    • http://nekuwagibajese.getenjoyment.net/why_is_my_roomba_flashing_red.pdf
    • http://healsmall.space/comprehensive_reports_in_user_research_methodsm5928.pdf
    • https://cdn-cms.f-static.net/uploads/4403262/normal_60517a6388c94.pdf
    • http://sdl-trade.com/xepazajuwujejuisyk1.pdf
    • http://rp-youtube.fun/zusajoguvizafunudunwnjd9.pdf
    • https://static.s123-cdn-static.com/uploads/4464995/normal_5fecbdd095ed4.pdf
    • http://daliadiago.com/data_science_jobs_salary_in_sri_lankaa2fsr.pdf
    • https://cdn-cms.f-static.net/uploads/4384150/normal_6049e6dd94650.pdf
    • http://gayerkan.com/katazalujuxesncksm.pdf
    • https://cdn-cms.f-static.net/uploads/4415531/normal_6044d19e2320f.pdf
    • https://static.s123-cdn-static.com/uploads/4427514/normal_6000c856e67cc.pdf
    • http://prechambre.xyz/xadazubopopujenilw7doh.pdf
    • http://webpost.pro/743606318924s2my.pdf
    • http://telgrm.site/amazon_3d_printer_black_fridayyw2ze.pdf
    • https://cdn-cms.f-static.net/uploads/4407781/normal_605be1dcd3a37.pdf
    • http://pubgucbayim.com/batuwogulojagz0gm.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://naburonip.myartsonline.com/98172177851.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001043e.bin
f1a1ae0c3c5575dacd30bb615c8050e7ed7c437922ed8e781deae831afb94730
pdf-font-stream PDF embedded font (sfnt) at offset 0x1043E 5240 bytes
font_01_sfnt_off00011603.bin
c8c862137648d6d213146b2cd11e9820c440e335ac722bdd82ffe8e0480bb111
pdf-font-stream PDF embedded font (sfnt) at offset 0x11603 10372 bytes