Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6e00c52b115df96…

MALICIOUS

PDF

78.1 KB Created: 2021-03-06 15:05:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: fa51823b22a8ff7369033eb277b774c0 SHA-1: 27e347989cf89d887c8ab9701ce35cb32a219074 SHA-256: e6e00c52b115df9637d6f355a26ca5fe079da062b45b5679e3790039031d1900
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links pointing to disposable domains, a common tactic for SEO manipulation or phishing campaigns. The ClamAV detection and ML classifier strongly indicate maliciousness, specifically as a phishing trojan. While no scripts were directly extracted, the PDF structure and numerous external links suggest it's designed to redirect users to malicious content, potentially leveraging embedded JavaScript for obfuscation or further redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://golowaki.ru/strik?utm_term=moving+average+tableau PDF link annotation
    • http://ctuxuu.com/dyndolod_could_not_open_registry_key9yi5r.pdfIn PDF document text
    • http://love-your-lips.online/nomixamoi30z.pdfIn PDF document text
    • http://honbiz.pro/yeti_stereo_microphone_driver_windows_10tibwi.pdfIn PDF document text
    • http://vereffka.xyz/nomazinizodsoztj.pdfIn PDF document text
    • http://sallles.ru/e2020_answers_pre_calc4jhdq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465402/normal_601fd57660f08.pdfIn PDF document text
    • https://wirimodarezekas.weebly.com/uploads/1/3/5/3/135314182/2144544.pdfIn PDF document text
    • http://egrn-order.online/acer_aspire_one_n214_drivers_download_windows_7h4ct5.pdfIn PDF document text
    • https://wamexololizod.weebly.com/uploads/1/3/2/7/132712163/gawexadili.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465010/normal_5fe7fa09a80eb.pdfIn PDF document text
    • http://tixshopclub.fun/playstation_vita_games_for_sale04xkm.pdfIn PDF document text
    • https://rakafofolobe.weebly.com/uploads/1/3/4/6/134649319/1e778e9d.pdfIn PDF document text
    • https://zefijevizo.weebly.com/uploads/1/3/2/3/132302816/6419739.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
    • https://uploads.strikinglycdn.com/files/53e43497-0405-4f32-95c1-53b84339a9e8/40596971372.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8eb51ecb-ed1e-4fbe-895a-dc557c792943/1157677486.pdfIn PDF document text
    • https://6eed613e-cbae-405e-b458-9655ef9033f8.filesusr.com/ugd/e4f6f0_9c52132d2bf443e1ab30f1c0abad758e.pdf?index=trueIn PDF document text
    • https://f05e0dbb-21cf-40ea-8b71-00b8d6f49a3b.filesusr.com/ugd/b09e1d_622a9e726dd24da1ad6b19183bced6d5.pdf?index=trueIn PDF document text
    • https://6eed613e-cbae-405e-b458-9655ef9033f8.filesusr.com/ugd/e4f6f0_fd5deba727b74a28acef61e8b8533b1f.pdf?index=trueIn PDF document text
    • https://7e70056c-c2aa-4e53-98c5-50750123c107.filesusr.com/ugd/f8ae5d_02cc4ce2cdb24022b20060a8cb5b995d.pdf?index=trueIn PDF document text
    • https://cc652f91-b1ab-470c-b36f-46d838ef85b2.filesusr.com/ugd/fbccce_e2e5912951ed433aa32e44e5dd4498d0.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4bbe8cf-c740-4d0a-9fbb-2f8f6ecf3ca0/best_drum_beat_for_hip_hop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ad372f6-d68e-4b3b-888f-30772d34b30f/vovapupivuwine.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_off0000e5a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5A8 4760 bytes
SHA-256: 4ab245bde04deb3b0ae278bab327857ddac42dbb59819fc778784e526d4907e5
font_01_sfnt_off0000f5f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5F2 11772 bytes
SHA-256: 08448e2fbb9f7d9b89df3032fb106a7ab56c91a2ffaea07cfe997e995733a580
font_02_sfnt_off00011d11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D11 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

Open this report in the interactive analyzer, or submit your own file for analysis.