Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fd6c191f9e9cfaf…

MALICIOUS

PDF

77.9 KB Created: 2021-03-20 06:55:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 17006b1caa2bf9dfc75a47297ffe242f SHA-1: 710655f00b25b0648cf9ac080f561f0277ecd69f SHA-256: 2fd6c191f9e9cfaf4f098d121cf61395e762cc2fbfdcce94e008c251314af031
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9995

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 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://seumenha.ru/strik?utm_term=how+to+disconnect+gemini+alarm+system PDF link annotation
    • http://vandify.com/boss_full_movie_free_movies_counter4db2u.pdfIn PDF document text
    • http://tokigarodam.22web.org/backflip_madness_free_full_version.pdfIn PDF document text
    • http://kind-insta.site/zosogiwedopomapezz3q9m.pdfIn PDF document text
    • https://cdn.sqhk.co/dojaxeje/zicxic0/tauceti_technology_benchmark_mod_apk_obb.pdfIn PDF document text
    • http://bcpzonasegur4viabcp.com/90480581544mx22u.pdfIn PDF document text
    • https://cdn.sqhk.co/nafolekuge/QTljaii/69456138067.pdfIn PDF document text
    • http://jijufopofe.iblogger.org/trane_xe90_furnace.pdfIn PDF document text
    • https://cdn.sqhk.co/merisipugito/hKjdgey/63463811712.pdfIn PDF document text
    • http://fruit-citrus.space/xotawaluvibupirobiden4naxg.pdfIn PDF document text
    • https://cdn.sqhk.co/rodofusavivi/gd3igjd/gakibaximelelemenakirono.pdfIn PDF document text
    • https://cdn.sqhk.co/linotepibubi/8eRkigI/metrotex_dallas_login.pdfIn PDF document text
    • http://jobware.pro/2291987519366a0b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://sesotogamut.epizy.com/textbook_of_biochemistry_for_dental_students.pdfIn PDF document text
    • https://7fc1e5b2-1dd8-4457-9de2-3dea1ab9f589.filesusr.com/ugd/fedd61_a68ed7ed904244a99039827b22f95576.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/a65de5b9-685d-43b9-bba3-59a3ce70874b/6544780512.pdfIn PDF document text
    • https://78905da9-dd21-4190-abaa-c894c042e703.filesusr.com/ugd/851c7c_a5f9d109db0641119b8c421533937f67.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/rca_rt2781hb_receiver.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8385e15-2adf-4b16-9b26-eb140a34d3a3/33099078706.pdfIn PDF document text
    • http://situzuwopemol.rf.gd/bet365_app_apple.pdfIn PDF document text
    • https://c81c1a69-aec6-471c-ac34-7a6800eafc69.filesusr.com/ugd/9ef1ea_46af2906900e44858fcf7ef980e93958.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sesijesule/wodazozuzinewikiwefutin.pdfIn PDF document text
    • http://texatopewewew.epizy.com/58547133862.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4F6 5204 bytes
SHA-256: 7956133f2095e876504deeb1ba0d1d36a0038c3c3b3d0e5b0bb0dabde40296e0
font_01_sfnt_off0000f697.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF697 10952 bytes
SHA-256: 9e0549e4927c4bb7414b58ef6d964695884830a33ee6c4f24bcda2b31a0709b7
font_02_sfnt_off00011c20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C20 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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