Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f7714adc197e06b…

MALICIOUS

PDF

76.4 KB Created: 2021-03-16 18:20:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 07bb373dc2f1133cec2237477617b0a6 SHA-1: 3b5c2337dbe148266c300ff2ef83bcc46d365aa6 SHA-256: 7f7714adc197e06b3a2c4618a6e833f5e8764439ac8e4304d882247f32000744
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jumiwimov.ru/wix?keyword=economics+principles+in+action+workbook+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4500453/normal_5fed5a6b81e44.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368745/normal_5fcb64a9e7af1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370280/normal_5ff68f68a5aa3.pdfIn PDF document text
    • http://blankid.ru/how_to_install_britax_pioneer_boosterh92d2.pdfIn PDF document text
    • http://bufo.online/81514177234npyv3.pdfIn PDF document text
    • http://kejurudoji.medianewsonline.com/tomesarofalojezojozama.pdfIn PDF document text
    • http://reawolt.online/42682725357y2kn.pdfIn PDF document text
    • http://xamawigokoke.mygamesonline.org/ziriziluw.pdfIn PDF document text
    • http://mazanatur.space/4889461702n0gra.pdfIn PDF document text
    • http://itnegozio.info/394908855e70pu.pdfIn PDF document text
    • http://aycotoro7.xyz/66285441837012r2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://duziroro.myartsonline.com/78680022497.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc6e7d09-93c7-41ca-9073-934c79893a7e/69032693503.pdfIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/59938408184.pdfIn PDF document text
    • https://s3.amazonaws.com/kifutizijebuj/swtor_lethality_operative_pvp_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a88c84e3-ecef-4a91-a79a-8f83e24b1441/etica_para_el_amador_libro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e8a43d0-c1c1-41e7-9f9d-078f35f21525/regulatory_japanese_road_signs.pdfIn PDF document text
    • http://kosezofejesuxef.atwebpages.com/70579324531.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31809d4f-23d5-4b35-aa9f-aea01011a0b2/photos_inside_air_force_one_plane.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/non_chronological_report_animals_year_6.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cea9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEA9 7548 bytes
SHA-256: ea5db5e7e4a19b01e2def22ac72a24402a9d56ddacd90f140fda3d80396bbabd
font_01_sfnt_off0000e79d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE79D 5556 bytes
SHA-256: 76b9290cac9920b8b78a89dbb5243f9e212b9e47a243600ea3dd3582f3aa390d
font_02_sfnt_off0000fa7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA7E 11720 bytes
SHA-256: d187f44952bd9da6a37bc9e5adae16795a985dc5f8479cfde6eaa32fdd45f57d

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