Malicious PDF — malware analysis report

Static analysis result for SHA-256 74ab1b5d745adc0a…

MALICIOUS

PDF

72.3 KB Created: 2021-03-19 12:45:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 9f22d141755efbc2d4a4ca088a3132ff SHA-1: 17c85b0055c3a79edff5264700b2c86e1ade2264 SHA-256: 74ab1b5d745adc0a4f92e3e59541af22107cc0e9ed5e23b0ce67320cce6d6e2a
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9998

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://midufefew.ru/award?keyword=business+plan+for+briquette+making+pdf PDF link annotation
    • https://dogaralezuj.weebly.com/uploads/1/3/1/6/131637140/458288.pdfIn PDF document text
    • http://rutenowataba.iblogger.org/15827157647.pdfIn PDF document text
    • http://vofimavotejaso.22web.org/pukobijagesalaz.pdfIn PDF document text
    • https://petirinupupa.weebly.com/uploads/1/3/1/4/131438611/kobiluvenude.pdfIn PDF document text
    • http://favarorul.iblogger.org/unshakable_hope_strength_study_guide.pdfIn PDF document text
    • https://zepitobazelaki.weebly.com/uploads/1/3/4/6/134619491/aa880.pdfIn PDF document text
    • http://ganeruk.iblogger.org/define_counselling.pdfIn PDF document text
    • https://rolurenogilu.weebly.com/uploads/1/3/4/0/134096536/ratixag.pdfIn PDF document text
    • http://nasumowuvajoda.iblogger.org/ceclor_af_750_mg_bula.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/32c2a970-61af-43a7-b84b-fa3996b4062a/troy_bilt_walk_behind_mower_parts.pdfIn PDF document text
    • http://wifavar.epizy.com/basic_hematology_questions.pdfIn PDF document text
    • http://fopuzotetowux.rf.gd/58304986995.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/000c0ab4-fcfb-42dc-8403-0b8da1ac02ca/93352371642.pdfIn PDF document text
    • http://pidukuniwid.epizy.com/24681553316.pdfIn PDF document text
    • http://zuxamivim.epizy.com/raglan_shirt_template_vector.pdfIn PDF document text
    • http://xikepilapap.rf.gd/cracking_the_sat_physics_subject_test_16th_edition.pdfIn PDF document text
    • http://buteboregof.epizy.com/34780058972.pdfIn PDF document text
    • https://b2fc43c4-60ab-4dc1-a1c8-84833fda4e2a.filesusr.com/ugd/37321e_e56b369467a942f39337044f723d62e5.pdf?index=trueIn PDF document text
    • http://nudegew.rf.gd/4105799398.pdfIn PDF document text
    • https://b84c3727-5d5a-4c5d-9d5d-21cac87b3a69.filesusr.com/ugd/fdd6c2_42698318155f4d62b2c5812976492a69.pdf?index=trueIn 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_off0000db08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB08 5740 bytes
SHA-256: 1c51d079490b19a9761e61f4ab8873b279da69498dc4273b9a77621059c29fe8
font_01_sfnt_off0000ee73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE73 11072 bytes
SHA-256: 1abde31464125969fa0e029f3a4d3258819117d241993c677c612d955af772b1

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