Malicious PDF — malware analysis report

Static analysis result for SHA-256 97fa9df35d1299d8…

MALICIOUS

PDF

77.8 KB Created: 2021-03-21 23:24:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 8f0342ba73c3820ffa35069be61e10f9 SHA-1: 9880b1248af2523c50a6e9827b6972d6ee6a8fb7 SHA-256: 97fa9df35d1299d8c5ccb27386cbfca0e617dd480be8a555e67ad21321ae873c
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://pelibifir.ru/wix?keyword=where+can+you+buy+nutrisystem+turbo+shakes PDF link annotation
    • http://skidki-day.shop/guitar_triads_chartgd69e.pdfIn PDF document text
    • http://xipevufizokev.iblogger.org/dante_boanstvena_komedija_pakao.pdfIn PDF document text
    • http://wide-take.top/totepepidwh8d3.pdfIn PDF document text
    • http://interior.estate/kisabusuremetopirfi8ez.pdfIn PDF document text
    • http://jotewelife.iblogger.org/spider_solitaire_iphone.pdfIn PDF document text
    • http://koolmaxt.online/stanley_fatmax_jump_starter_how_to_use4no1p.pdfIn PDF document text
    • http://pirugaf.iblogger.org/36231290902.pdfIn PDF document text
    • http://datinge.site/taluguvofixagamowiwmnf5.pdfIn PDF document text
    • https://xisevulatunetu.weebly.com/uploads/1/3/4/5/134595014/2153158.pdfIn PDF document text
    • http://igcopyrightclient.com/pawumusevofipewuraxgamba.pdfIn PDF document text
    • https://megeludok.weebly.com/uploads/1/3/4/5/134595993/35ae3bcc751b.pdfIn PDF document text
    • https://wujenorap.weebly.com/uploads/1/3/5/3/135322769/retiwizosubim.pdfIn PDF document text
    • http://svoytrylend.xyz/675224041551f1os.pdfIn PDF document text
    • http://universityru.fun/tewalukidalavilukoruxapedr3se.pdfIn PDF document text
    • http://ogranicbio.space/characteristics_of_good_report_writingl38q4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mopawok.epizy.com/warlock_classic_leveling_guide_talents.pdfIn PDF document text
    • http://tufomatewivade.rf.gd/vintage_tappan_deluxe_gas_stove.pdfIn PDF document text
    • http://sedoguzod.rf.gd/68157202507.pdfIn PDF document text
    • http://bugemuf.epizy.com/life_fitness_x9i_elliptical_trainer.pdfIn PDF document text
    • http://newigumumakewi.epizy.com/gofizudexowevoxoxagegifi.pdfIn PDF document text
    • http://sewavun.epizy.com/9558280909.pdfIn PDF document text
    • http://fefisapuvekebi.epizy.com/278496879.pdfIn PDF document text
    • http://kemolazovejuru.epizy.com/bacteriosttico_y_bactericida.pdfIn PDF document text
    • http://kevokafi.rf.gd/kemalewididefamagib.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF0A 5324 bytes
SHA-256: d02f77388696273fb7d3c9f8eff4a4f1b7dab762df6699037884a1200e947be1
font_01_sfnt_off00010110.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10110 12000 bytes
SHA-256: 55ac106684b8ec59542e5205679bfe717f405deae18089002860557615406e18

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