Malicious PDF — malware analysis report

Static analysis result for SHA-256 cce6499aae20189d…

MALICIOUS

PDF

76.2 KB Created: 2021-04-02 22:28:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 783baca352936cacbafd7870fc52dd6d SHA-1: 5562458ac59de51217323c693d4bf2234241be33 SHA-256: cce6499aae20189d93a1fbf961fc78dff00e8bac8f73db5888e699073838e2b7
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or scam attempt. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The document body, though heavily obfuscated, contains keywords related to software downloads, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • 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.
  • 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://jumiwimov.ru/123?utm_term=website+er+software+free PDF link annotation
    • https://cdn.sqhk.co/kebabefepu/gctVzUv/36919173696.pdfIn PDF document text
    • https://cdn.sqhk.co/riwifesineji/ge0gfji/lighthouse_keeper_movie_review.pdfIn PDF document text
    • https://cdn.sqhk.co/sifajoxojif/ejhig0P/munumamis.pdfIn PDF document text
    • https://cdn.sqhk.co/dudexobexine/JjgRhjf/danifozufidavokuv.pdfIn PDF document text
    • http://damodudajipofem.22web.org/asnt_level_ii_rt_study_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/patagarinixa/bgfu4w9/zynga_slingo_game_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/rufosopufu/pjiShhc/69296964253.pdfIn PDF document text
    • https://cdn.sqhk.co/gixotagokezu/P9gdlNT/52319483846.pdfIn PDF document text
    • https://cdn.sqhk.co/sazipuvaxiv/giUwfX2/books_to_read_for_business_management_degree.pdfIn PDF document text
    • http://jovekigapovokeb.22web.org/zujajusidajora.pdfIn PDF document text
    • https://cdn.sqhk.co/ridijafugemi/hidkgdk/pasenatogevetatobava.pdfIn PDF document text
    • https://cdn.sqhk.co/loganidob/dhKjejb/word_treasure_hunt_game.pdfIn PDF document text
    • https://cdn.sqhk.co/wareberefiz/jgfm0ei/best_pop_up_truck_camper_brands.pdfIn PDF document text
    • https://cdn.sqhk.co/banamasuvaj/yuheh4d/83871198305.pdfIn PDF document text
    • https://xikipavukageza.weebly.com/uploads/1/3/0/7/130776529/5603068.pdfIn PDF document text
    • https://zamivevi.weebly.com/uploads/1/3/1/4/131437513/ca907e75cafce.pdfIn PDF document text
    • https://cdn.sqhk.co/tibidimewako/IjjG8ja/50583561456.pdfIn PDF document text
    • https://cdn.sqhk.co/rugugojeba/ojagc0a/naija_highlife_music_mix.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://acaa17bf-cf2e-4132-a9e9-810271eb8bc4.filesusr.com/ugd/ab5b4c_55d25e5fe7c14bb189bfc82946e1e8a1.pdf?index=trueIn PDF document text
    • https://3568ea06-17fa-4787-91ae-86b9aa918cbd.filesusr.com/ugd/8ade13_d144b6e8114644b0a5e1b1eeed73e7ed.pdf?index=trueIn PDF document text
    • https://f459ab6e-ac57-43ce-b83a-1524846427e4.filesusr.com/ugd/938c70_a5206c725b9349349687715738d7df82.pdf?index=trueIn PDF document text
    • https://e791dc30-71fd-4519-a75e-453748eb9c32.filesusr.com/ugd/8a5fcf_fa2fea47ab7d4f33887ff04cf25d091e.pdf?index=trueIn PDF document text
    • http://dakokaxawizepu.epizy.com/xedogezunakawegupalipapos.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_off0000ee18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE18 4976 bytes
SHA-256: 50812d421942b0dd079c9b958e3b8d650e6a28c60cfce24a6850ee5c94c83885
font_01_sfnt_off0000ff29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF29 10596 bytes
SHA-256: ca20bab826a3373594b12ae9f17174cb8fb411132e6bee379d4ab81bef71f5ac