Malicious PDF — malware analysis report

Static analysis result for SHA-256 af71afd0e70a8066…

MALICIOUS

PDF

70.9 KB Created: 2021-03-01 21:25:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 1149c9e6b8dce9253f923a980fe33736 SHA-1: 7f761c45c937570fa4f6a88d43b00dba5ff8273c SHA-256: af71afd0e70a80660600ee3635f995a29e31a6b3aa4c377149987a8f02903ea5
124 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 0.9596

Heuristics 4

  • 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
  • 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://xezojetit.ru/award?keyword=apple+iphone+6+plus+user+guide+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4445868/normal_5fd68c06b5273.pdfIn PDF document text
    • http://bandalet.club/ancient_words_piano_sheet_musicur3a0.pdfIn PDF document text
    • http://yachts-4-sale.com/alcatel_one_touch_pop_c2_hard_reset5od3k.pdfIn PDF document text
    • https://pomapufawupufus.weebly.com/uploads/1/3/5/3/135397804/a19918e0.pdfIn PDF document text
    • https://somirurawepaf.weebly.com/uploads/1/3/1/3/131381963/4432584.pdfIn PDF document text
    • http://raifaisentgo.online/christmas_pudding_running_leggingst3x3n.pdfIn PDF document text
    • http://callipakk2.site/zuzagufasomilakoxedubekp43k.pdfIn PDF document text
    • http://doweryklkq.space/missile_wars_minecraft_servero6k5x.pdfIn PDF document text
    • https://lirodute.weebly.com/uploads/1/3/1/8/131871659/repirozizugibef.pdfIn PDF document text
    • https://kimewazokedusa.weebly.com/uploads/1/3/1/4/131454536/8d89fb590.pdfIn PDF document text
    • http://originalhallyu.com/bpsc_pre_exam_2018_answer_key5hptt.pdfIn PDF document text
    • http://cheatyou.site/how_many_pages_is_twilight_book_1uibs2.pdfIn PDF document text
    • https://bevarepovorumi.weebly.com/uploads/1/3/2/3/132303359/patavuxupomazino.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413121/normal_5ff991c19cea7.pdfIn PDF document text
    • http://distornyup.site/meaning_of_capriform1h6eu.pdfIn PDF document text
    • https://detofupupe.weebly.com/uploads/1/3/1/3/131384021/d3c7d03.pdfIn PDF document text
    • https://fafefojesuvun.weebly.com/uploads/1/3/4/6/134651362/kuvab-saxil.pdfIn PDF document text
    • https://mozeduxazos.weebly.com/uploads/1/3/4/0/134018133/2978500.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/tuxexi/gopuwipugogivafisok.pdfIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/8584679032.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8B6 5236 bytes
SHA-256: 4aef7de9a0d42ef39c072f0a0de56ea264744c78eefb8c8a3561bd899e9a2d8e