Malicious PDF — malware analysis report

Static analysis result for SHA-256 5942c7ec07206e7a…

MALICIOUS

PDF

80.0 KB Created: 2021-03-11 20:50:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 1d27229279ba8afc78e323d27bda6556 SHA-1: ba7beacb1a5d1d83ee8abf65c060f91917e39c3f SHA-256: 5942c7ec07206e7a675d60015531d622d6df94699f79045437099bf8e3efcd82
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains multiple embedded URLs, with one prominent URL leading to a suspicious domain associated with phishing and malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, suggests a lure related to biblical commentary to mask the malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/strik?utm_term=niv+application+commentary+set+old+testament PDF link annotation
    • http://vinorama.fun/what_are_early_years_curriculum_modelsq7hnm.pdfIn PDF document text
    • http://kersita.space/biwesogejivaxrxmd.pdfIn PDF document text
    • http://hookup153.space/what_does_the_rattlesnake_symbolize_in_the_story2b1oh.pdfIn PDF document text
    • http://busibear.com/job_application_letter_for_fresher_format5np8l.pdfIn PDF document text
    • http://begemot.space/73768815001dzh7e.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/sepovutapakogaf/chaka_chaka_bhaunri_song.pdfIn PDF document text
    • http://godutugogusapa.rf.gd/lexus_gx_460_specs.pdfIn PDF document text
    • http://mabagojovas.epizy.com/24669069792.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4c7337b-f2f0-4fa6-aa80-ae97fbdc53e5/73408112113.pdfIn PDF document text
    • https://s3.amazonaws.com/bejenosugede/regional_marketing_manager_jobs_in_india.pdfIn PDF document text
    • https://s3.amazonaws.com/jolituzoji/what_are_the_5_wisdom_books_of_the_bible.pdfIn PDF document text
    • https://s3.amazonaws.com/makixibawumebol/94509424997.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d7d3ece-9986-4073-9655-0d0a19518284/jawefa.pdfIn PDF document text
    • https://s3.amazonaws.com/sumesawoxajew/bafoxiwojipujoreroxel.pdfIn PDF document text
    • http://nofugodevi.rf.gd/dolovolotuloveboni.pdfIn PDF document text
    • http://xenivut.epizy.com/vibefogegodexumudas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfcec06c-1b97-4041-8da3-600304dfe727/what_does_the_number_808_mean_in_your_dream.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/absolver_game_guide.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_off0000fca1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCA1 5352 bytes
SHA-256: 86bec62c7f92add9454ad919c8d46c29c255ec123458402bcbb772e9d9e89c99
font_01_sfnt_off00010ece.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ECE 10504 bytes
SHA-256: 9276806192a4fd9a63502061ce5694b7d05c9600bc03bd57d2bd7083952463be

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