Malicious PDF — malware analysis report

Static analysis result for SHA-256 be14fdd00d9ea967…

MALICIOUS

PDF

71.9 KB Created: 2021-03-20 17:50:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: a612bc7a84163c7fd4c697aa58bd96df SHA-1: 57425a1270dd265fb7a710e34f3144b1209e6075 SHA-256: be14fdd00d9ea96797b7cd2288be670e068c556652534553ff8f26d060211961
166 Risk Score

Malware Insights

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

The PDF contains numerous external links, many hosted on disposable domains, suggesting a link farm or phishing attempt. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document may be instructing the user to open a password-protected archive, a common tactic to bypass gateway scanning. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://vilenefex.ru/strik?utm_term=science+fusion+login PDF link annotation
    • http://xifasiv.getenjoyment.net/45834119948.pdfIn PDF document text
    • http://saroforati.medianewsonline.com/mevijorutinitaruwala.pdfIn PDF document text
    • http://wordwild-store.com/6546942869093t3b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444104/normal_60157115e2459.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452595/normal_60434edc99744.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481403/normal_6019d2812fd1c.pdfIn PDF document text
    • http://fizebiredasibi.mypressonline.com/medakamefuzofutuve.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390374/normal_603fe6bc75c65.pdfIn PDF document text
    • http://gidujoluj.mypressonline.com/16312360331.pdfIn PDF document text
    • http://wugumonisukanib.sportsontheweb.net/52502486790.pdfIn PDF document text
    • http://tohld.in/32915622187tikze.pdfIn PDF document text
    • http://bigmagazin.xyz/zarenivufijixekemoxuzorltsq.pdfIn PDF document text
    • https://cdn.sqhk.co/farafakilof/3gcfEih/zumulotezanewugutuxepul.pdfIn PDF document text
    • https://cdn.sqhk.co/pabelewexo/5hjbojf/amazon_hub_counter_returns.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404296/normal_60347be0bb893.pdfIn PDF document text
    • http://lnstagramlivesupportcenter.com/91030381463jrwnp.pdfIn PDF document text
    • https://cdn.sqhk.co/bisegepamitu/ggcgdia/mujugenoniwarez.pdfIn PDF document text
    • http://bestgirl69.com/android_10_galaxy_s10_plus_ukkpxpw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/262e2ed6-a921-4681-9b7d-7bf78b5199aa/frick_natural_gas_screw_compressors.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a641444c-002c-4535-b181-c061c3d6444f/how_to_compare_dish_network_packages.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6365f2f-90b4-4dec-b6ab-96204097d68f/62210750340.pdfIn PDF document text
    • http://naxesabefadufu.atwebpages.com/integrated_chinese_level_1_part_2_workbook_answer_key_lesson_16.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_off0000d9fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9FB 4844 bytes
SHA-256: 53eeea3d450e7e4b80f8f6b083634b56fe4f3e868503cc3e43a78da4ed5e0d4d
font_01_sfnt_off0000ea98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA98 11368 bytes
SHA-256: bd2859a7b38e430b4e7f06399ea71be1904639ec47efc2c0563742f905cf8a4c

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