Malicious PDF — malware analysis report

Static analysis result for SHA-256 aab34907f8f464b8…

MALICIOUS

PDF

77.7 KB Created: 2021-02-17 07:47:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 116ecbd30344bbc249dcfb7e8da9a6b0 SHA-1: 33d89cca149a3139e6f5bc43fac9861eb9848d97 SHA-256: aab34907f8f464b8e82e85dff2258878b805fbe81efd048770c2acdd6f78d56a
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The presence of numerous embedded URLs, many pointing to disposable domains and link farms, strongly suggests a phishing or malware distribution campaign. The document body, though heavily obfuscated, contains references to search terms and application names, likely serving as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://bologen.ru/strik?utm_term=after+we+collided+netflix+release+date+canada PDF link annotation
    • http://kesenirevapovid.iblogger.org/kaththi_sandai_movie_in_single_part.pdfIn PDF document text
    • https://cdn.sqhk.co/verexumifo/ijvjdsl/tap_tap_shooter_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/bagudivibi/AgfIlEU/80451282388.pdfIn PDF document text
    • https://cdn.sqhk.co/nagebagem/jhahcig/75185891826.pdfIn PDF document text
    • https://cdn.sqhk.co/perigupa/PViejS5/virus_killer_for_android_phones.pdfIn PDF document text
    • http://cesaregaspari.com/term_end_assignment_paper_ignouvv1tc.pdfIn PDF document text
    • https://cdn.sqhk.co/jumupebuvi/bggwhjH/75719264380.pdfIn PDF document text
    • https://cdn.sqhk.co/matajikiwov/Mgj0hgx/nepomozuxofuwonosiwa.pdfIn PDF document text
    • http://lnstagramlivesupportcenter.com/legions_of_rome_mod5s3mg.pdfIn PDF document text
    • http://gebiponakefijar.22web.org/19651940400.pdfIn PDF document text
    • http://hotita.space/77756340319jpdlx.pdfIn PDF document text
    • https://cdn.sqhk.co/ditetona/chiW58w/smartthings_plug_not_responding.pdfIn PDF document text
    • https://cdn.sqhk.co/zezugiwetibe/bjdb6ga/axis_360_ebook_account.pdfIn PDF document text
    • http://lodiped.iblogger.org/jakad.pdfIn PDF document text
    • https://cdn.sqhk.co/puninuzono/ighchf6/63257073521.pdfIn PDF document text
    • http://rating-bookmaker.ru/starbucks_almond_milk_frappuccino_nutrition0rt0o.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lezerawe/43053164886.pdfIn PDF document text
    • http://dapubul.rf.gd/xejobedu.pdfIn PDF document text
    • http://xesidif.epizy.com/486882322.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_off0000effe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFFE 5164 bytes
SHA-256: 7a40efdb0a127d1fc369fc243407afdca0bf7485c3397f66a9b9139189a748f8
font_01_sfnt_off000101b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101B1 11116 bytes
SHA-256: 9d5c804cc731ccd70e8f3d5dee693c4fcc15400d4567be00ac0d5b43f75e6d77

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