Malicious PDF — malware analysis report

Static analysis result for SHA-256 29af89b4762c7daf…

MALICIOUS

PDF

80.9 KB Created: 2021-02-19 05:32:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: f6cd2f0a771f414685ed9fc4785a55f4 SHA-1: d940b0a51e5c18fbf16c1c9cf291f9ff7fd6e7c5 SHA-256: 29af89b4762c7dafb9667b7a32f8cf2a13e87809564acc158ded18313b745296
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

The sample was flagged by ML classifiers and ClamAV as malicious, with specific heuristics indicating a remote support tool lure. The document body, though heavily obfuscated, contains references to URLs that are part of a link farm, suggesting a phishing or credential harvesting attempt. The presence of embedded JavaScript further supports the malicious intent, likely to facilitate the execution of further malicious code or redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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://crophysi.ru/strik?utm_term=what+wine+pairs+well+with+lamb+curry PDF link annotation
    • https://lefoteliwe.weebly.com/uploads/1/3/4/0/134095852/40c8bf.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxawexa/gThfjfF/lijofawo.pdfIn PDF document text
    • http://ig-copyrightnoticehelp.com/why_looks_are_the_last_bastion_of_discrimination_answersxov1n.pdfIn PDF document text
    • http://pelistens.xyz/shellac_nails_near_me_open_sundayitf4a.pdfIn PDF document text
    • https://kovorugoza.weebly.com/uploads/1/3/1/3/131383314/badobo.pdfIn PDF document text
    • https://cdn.sqhk.co/podidiwi/cePO1ie/19210031293.pdfIn PDF document text
    • http://espaceclient-cmb.com/digilunowelobojodafezuxir90jbq.pdfIn PDF document text
    • https://cdn.sqhk.co/kagelemovo/jj2mieG/reaction_trainer_ball.pdfIn PDF document text
    • https://xoxomedeze.weebly.com/uploads/1/3/5/3/135308121/0070e1a4e6d74.pdfIn PDF document text
    • https://cdn.sqhk.co/vukupamita/5Qhifia/95303117794.pdfIn PDF document text
    • https://miniroworopan.weebly.com/uploads/1/3/4/4/134444940/gotejukugegiw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/zupenafud/zubotagexip.pdfIn PDF document text
    • http://dinixebun.epizy.com/amumu_guide_s8_top.pdfIn PDF document text
    • http://rimamosapike.epizy.com/86094266131.pdfIn PDF document text
    • http://gikunipif.epizy.com/wetijesumipemujoxokupudi.pdfIn PDF document text
    • https://s3.amazonaws.com/bejideba/page_borders_for_word_documents_free.pdfIn PDF document text
    • http://tidefos.epizy.com/73272203778.pdfIn PDF document text
    • http://xatosizukav.epizy.com/40169217221.pdfIn PDF document text
    • http://ravitog.rf.gd/shane_eagle_cutting_corners_music_video.pdfIn PDF document text
    • http://fesonukoropirum.rf.gd/notion_d_algorithme_informatique.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eff2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFF2 5292 bytes
SHA-256: d52bfc6bee20180bfdacbd57ba52824662453babdac692a9152d1b81a5f156f0
font_01_sfnt_off000101ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101CA 11656 bytes
SHA-256: e6f2a7bbd46d078dc32c01624f641746cedd39f29b8be3e78cb5c841d34af8b2
font_02_sfnt_off00012824.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12824 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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