Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1fabcb62e11874e…

MALICIOUS

PDF

81.5 KB Created: 2021-03-06 19:39:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: dc66701a93f327d53c9b61354b666f00 SHA-1: 206d56b5fc860a28587b84b72011029a0170c825 SHA-256: e1fabcb62e11874ea5e1cbd16786dabf57f260e626d474558f8f8834b82d3cfa
186 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • 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.
  • 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://ponafet.ru/123?utm_term=what+are+the+stages+cell+cycle PDF link annotation
    • https://cdn.sqhk.co/bigulikexupa/HxhfhgZ/super_bomberman_5_menu_translation.pdfIn PDF document text
    • https://zebotulebile.weebly.com/uploads/1/3/6/0/136052074/dunanonaresepi-popuna-tinaj-jisuxu.pdfIn PDF document text
    • http://gadifurewurol.22web.org/mixed_martial_arts_training_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/kigaratak/ghjigix/like_videos_for_tik_tok_musically_download.pdfIn PDF document text
    • https://lobovalosidim.weebly.com/uploads/1/3/1/4/131437181/xapali_kusanodobuxuji_ketukexeme_tutuzovewek.pdfIn PDF document text
    • https://cdn.sqhk.co/betewulo/hdiiGGL/mekutabelir.pdfIn PDF document text
    • https://ruregogawumol.weebly.com/uploads/1/3/2/8/132815787/nabiwafidulib.pdfIn PDF document text
    • https://rulorakaduf.weebly.com/uploads/1/3/4/4/134480735/tokeg_nofigefapobi.pdfIn PDF document text
    • https://jeratevi.weebly.com/uploads/1/3/0/7/130774970/xazeva_bupusatogaf_xebofuroduna_nuredewav.pdfIn PDF document text
    • https://gusotefatimadi.weebly.com/uploads/1/3/1/6/131636747/leweperonuxubu.pdfIn PDF document text
    • https://lexugorubu.weebly.com/uploads/1/3/0/7/130776619/f861afabd9c.pdfIn PDF document text
    • https://sotezogurew.weebly.com/uploads/1/3/2/7/132740991/tenolu.pdfIn PDF document text
    • http://gedawirij.66ghz.com/camera_nx_apk_old_version.pdfIn PDF document text
    • https://gukujevanedin.weebly.com/uploads/1/3/5/3/135344472/vuzipaxoz.pdfIn PDF document text
    • https://gakewejodum.weebly.com/uploads/1/3/4/9/134902465/4480160.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://waxozex.epizy.com/7618017346.pdfIn PDF document text
    • http://tobewopuma.rf.gd/lenej.pdfIn PDF document text
    • http://gekikebikujog.rf.gd/black_friday_full_movie_free_480p.pdfIn PDF document text
    • http://jiwimid.epizy.com/81213283503.pdfIn PDF document text
    • http://tafogekodunegi.epizy.com/pedusuzazojubub.pdfIn PDF document text
    • http://sosozodazu.epizy.com/sofaguveguvolikex.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010403.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10403 5176 bytes
SHA-256: 109a9f4cd4aea3629a656e4080a66767dc42271379003afdab60f64838168e91
font_01_sfnt_off000115b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115B0 10356 bytes
SHA-256: 1723a8a65d897b902888ef1a500f37b0ec7e5f2f2dd13753c3a91693fe49a879

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