Malicious PDF — malware analysis report

Static analysis result for SHA-256 007fd19ef83579c7…

MALICIOUS

PDF

85.0 KB Created: 2021-03-31 02:31:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: be9c521220532662391e7a59e0adb366 SHA-1: 7bd5b04fd5d606ab5877bce649c30d45c3d41243 SHA-256: 007fd19ef83579c77b501439cd66fb307dbe1cacd7337ea261cd68f5084b4087
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs, many of which point to disposable domains and are indicative of a link farm designed for SEO manipulation. One prominent URL, https://pelibifir.ru/strik?utm_term=john+deere+316+mower+deck+parts, suggests a lure related to specific product parts, likely to trick users into clicking through to a malicious site. No scripts were extracted, but the PDF structure and URL patterns strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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 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://pelibifir.ru/strik?utm_term=john+deere+316+mower+deck+parts PDF link annotation
    • https://cdn.sqhk.co/lixabanitav/jabhe5s/13325679109.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379984/normal_6042221888a5e.pdfIn PDF document text
    • https://cdn.sqhk.co/sibamoxa/jjApGTj/jebupinake.pdfIn PDF document text
    • https://cdn.sqhk.co/kosenopelid/igtgiD8/81110455148.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446026/normal_60451597af78c.pdfIn PDF document text
    • https://cdn.sqhk.co/rokabumake/POjfDih/best_tool_kit_for_home_australia.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487194/normal_6054b0c356ebd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379032/normal_602c8c68ace5e.pdfIn PDF document text
    • http://bovinuxunegobi.iblogger.org/wondershare_to_word_converter_mac_crack.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486981/normal_5ffaaa00251ba.pdfIn PDF document text
    • http://dilurijarejo.22web.org/treble_and_bass_clef_note_naming_worksheets.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404980/normal_5fd692c4dee02.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475992/normal_5fdb899faf7c2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413566/normal_5fec3194d2ac7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451205/normal_601cb851411fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390056/normal_5fdb37a9a1232.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413867/normal_602f25ef81928.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/16126182-71e3-4123-8ab3-3dc73bde5f5a/editor_de_tarjetas_de_presentacion_en_linea_gratis.pdfIn PDF document text
    • http://mulozeraxepe.epizy.com/absolver_downfall_guide.pdfIn PDF document text
    • http://weralawubuzeg.epizy.com/boleslaw_prus_the_doll.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f3ea682-8156-4794-be9a-8c82894d1832/dead_suns_rebuild.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_off0000ff83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF83 5536 bytes
SHA-256: b85037f5a3303244cd745bb72aa8ba243f9ff41aa40555c376b86296e88ecb5e
font_01_sfnt_off0001122e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1122E 11388 bytes
SHA-256: 12d17fe277dbf194da266fd3603f054625d5be7610cbdcdf26706d93e2664b84
font_02_sfnt_off000138e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x138E2 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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