Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a8074e2662184c5…

MALICIOUS

PDF

71.5 KB Created: 2021-02-26 17:17:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 4d8eebfd985054d6eb700c1a2c7539b1 SHA-1: 4eb0caef1202bb4e4b88059f08098bbc1fb5d3e4 SHA-256: 3a8074e2662184c5f05b5198788b814503366a2702fd2d0c3d6498677bf3e756
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://yafferge.ru/award?keyword=graco+trax+jogger+click+connect+stroller+manual In PDF document text
    • https://sililojakofatef.weebly.com/uploads/1/3/2/7/132712383/323122.pdfIn PDF document text
    • https://xusedivofasug.weebly.com/uploads/1/3/2/7/132741162/retisagaxopazuv_dulejufidu_libekosetepedaw_pobowixef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481831/normal_5fcdcff7b61eb.pdfIn PDF document text
    • https://tizusetupo.weebly.com/uploads/1/3/1/6/131607013/towozivefoselefu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486350/normal_5fc69e37de1a0.pdfIn PDF document text
    • http://shoes-storie.club/ross_stores_stock_after_hoursbukst.pdfIn PDF document text
    • https://rigaxufoze.weebly.com/uploads/1/3/4/3/134386371/2708649.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498994/normal_603705b412afb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402944/normal_5fc75eed87b4d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457592/normal_5fd5f65e24357.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490274/normal_5ffbeb4296c03.pdfIn PDF document text
    • http://uniques.space/nemomupatezixivilulojebajp6lt4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480399/normal_6025b688d74ba.pdfIn PDF document text
    • http://workshop-fb.ru/pte_academic_word_listca70l.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470224/normal_5fe8413043972.pdfIn PDF document text
    • http://shopmzm.site/71547610436sv657.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469101/normal_5ff6af3b3fe23.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/vapite/kitchen_chimney_manual_vs_auto_clean.pdfIn PDF document text
    • http://bimimikojawador.rf.gd/54518895851.pdfIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/ny_state_absentee_ballot_form.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/windows_10_for_macbook_air.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dac3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAC3 5360 bytes
SHA-256: 79d1f562184bc9b5d83a15b5584a7bdcaa5f4d49a7b8a402c1a823055b8e3e77
font_01_sfnt_off0000ecf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECF6 10388 bytes
SHA-256: b5556817fb220718f2323ca7abca4b8b082f25a039caac6aba00904f0730f74d