Malicious PDF — malware analysis report

Static analysis result for SHA-256 8208561429658c73…

MALICIOUS

PDF

73.1 KB Created: 2021-03-05 17:44:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 7c02a0ec09ebc47b207a50593f58b8a4 SHA-1: 13f6fcce0e47307a10c7ca1487df83f76dcbb7c4 SHA-256: 8208561429658c7398023f8880c274ec45e98db1026f61b6f21f786b10323360
156 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 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 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.
  • 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://zajinet.ru/wix?keyword=turkey+fryer+manual PDF link annotation
    • http://storeeuro.info/rigubiwila9t9l.pdfIn PDF document text
    • https://cdn.sqhk.co/norowitidot/BGKFih5/jumixinigixememogolo.pdfIn PDF document text
    • https://cdn.sqhk.co/jevamivuvugi/iiHsjbz/samurai_hd_wallpaper_for_android.pdfIn PDF document text
    • https://risimapi.weebly.com/uploads/1/3/4/3/134321435/a3658f.pdfIn PDF document text
    • http://takipleskazan.org/sex_positions_for_menstrual_cramps_imagesw5g4e.pdfIn PDF document text
    • https://muwevazed.weebly.com/uploads/1/3/1/0/131070925/3598643.pdfIn PDF document text
    • https://gopaxabog.weebly.com/uploads/1/3/5/3/135309926/a6f4ad.pdfIn PDF document text
    • https://rukusipaxup.weebly.com/uploads/1/3/2/6/132683367/garexunefaluliraxiv.pdfIn PDF document text
    • http://italy-small.space/xufizotabinixikuyrycs.pdfIn PDF document text
    • https://cdn.sqhk.co/ninulekuto/ja5giie/fovigenesawesawuz.pdfIn PDF document text
    • https://tevejokufip.weebly.com/uploads/1/3/0/9/130969131/fuboworalizodab.pdfIn PDF document text
    • https://cdn.sqhk.co/nimuxugemu/egfhg3k/usc_student_murder_charge.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/wifukedot/xomabunabiziz.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/luxury_travel_agency_website_template.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/normal_follicular_study_report_on_14th_day.pdfIn PDF document text
    • https://s3.amazonaws.com/nevovumowa/sirabo.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/government_information_classification_levels.pdfIn PDF document text
    • https://s3.amazonaws.com/neporezofov/tizukapebobokuwudot.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/net_exam_2018_answer_key_december.pdfIn PDF document text
    • https://s3.amazonaws.com/gupawupigawono/chi_la_sow_full_movie_telugu.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_off0000e3b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3B9 4848 bytes
SHA-256: f0f8e7f973879a59c86a0ed0a4bb4744833478495474bc58f191db9c507dda4f
font_01_sfnt_off0000f429.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF429 10364 bytes
SHA-256: a1c04da51f8645c932a9270b8bc55d3eea5f4acad2bc3255fbb13d918aa2f989

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