Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fe802ee91c5f946…

MALICIOUS

PDF

62.7 KB Created: 2021-03-01 21:25:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 6aebea4b8f132aed979ef615a289122c SHA-1: 73b0a905c90a3fabbda1e5fdaf280e0215ede98f SHA-256: 2fe802ee91c5f9463bc58458a451356860f5bf1d8bcf7d6a0c18467f3dcaaec2
124 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many hosted on disposable domains, suggesting a link farm used for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a common phishing or malware delivery technique.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9753

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