Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0efe5fce9a2a3c1…

MALICIOUS

PDF

83.9 KB Created: 2021-03-27 22:35:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 14673621a27cf9d1ca2ed882c20e19d2 SHA-1: 27d7171d8b3357f748da479eede71fcd8dbf2688 SHA-256: d0efe5fce9a2a3c1a9c3d5c40209b6646184c6972ba0f091d81b1d157c7bf885
126 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs, with one specifically identified as a lure related to programming a remote control. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using disposable hosting for numerous links, suggesting a phishing or malware distribution scheme. ClamAV detection as 'Pdf.Phishing.Trojan' further confirms its malicious nature, likely serving as a phishing lure or a downloader for a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xezojetit.ru/aws?utm_term=how+to+program+xfinity+xr2+remote+to+vizio+tv PDF link annotation
    • http://kejurudoji.medianewsonline.com/kamuleguvopejonodogu.pdfIn PDF document text
    • http://fajujefa.getenjoyment.net/siletutumenixovetajigot.pdfIn PDF document text
    • https://cdn.sqhk.co/luwesefizi/2Vigigf/42901146500.pdfIn PDF document text
    • https://cdn.sqhk.co/posaleren/heNgdgj/globe_prepaid_promo_unli_data.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410694/normal_5fd2f52a9fcdb.pdfIn PDF document text
    • http://jesofoma.getenjoyment.net/estructura_general_de_la_metodologia_dela_investigacion_cientifica.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409258/normal_6022f793e1ded.pdfIn PDF document text
    • https://cdn.sqhk.co/lunosupi/cvie4ii/40894819327.pdfIn PDF document text
    • https://cdn.sqhk.co/ragejeli/iiWRJZL/47104170023.pdfIn PDF document text
    • http://lozuzaragujeb.mypressonline.com/12th_science_biology_book_in_gujarati_sem_4_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371265/normal_5feb2df635d8f.pdfIn PDF document text
    • https://cdn.sqhk.co/lexoxuxoluvi/geidygf/cossacks_3_download_mac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393189/normal_601f65da1efb0.pdfIn PDF document text
    • https://cdn.sqhk.co/nolagutotato/ihijevE/25900065038.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zimopup.myartsonline.com/does_chocolate_milk_cause_weight_gain.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cc27efa-1e41-4a75-afcd-c3b716d9e6a2/96389477143.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89e11771-d800-4b29-99f2-b32ca2b8da50/97563721713.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/035871db-6312-48bc-bdc8-5bf1d5ecc41b/puzilajokumarataxaxo.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_off0001093e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1093E 5476 bytes
SHA-256: 598d4bce1539798270f8a4868598cbe3dfe48e95e232ce9574c452141742ab44
font_01_sfnt_off00011bfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BFD 11424 bytes
SHA-256: 37eec3c89584b53d73b79b0814427ec2aa3a75da7ddd8496a98d32ca1d31d937

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