Malicious PDF — malware analysis report

Static analysis result for SHA-256 d30fd225f1c733b8…

MALICIOUS

PDF

75.8 KB Created: 2021-03-17 17:40:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 59a8966c96e21a59c1058696b944510b SHA-1: c3ad1c19c65e52d6f3360978d6d8e8ab2bd9b81c SHA-256: d30fd225f1c733b870e9d595f3d9dc936a0aefdda82d107167f07bd5ad5ab815
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://dugedepap.ru/wix?keyword=standard+notation+worksheet+answers PDF link annotation
    • http://tryraisins.pro/golf_buddy_voice_23p1cc.pdfIn PDF document text
    • https://cdn.sqhk.co/febutatesu/Sgejhii/ridusan.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxofidipo/ib1haQK/22985151622.pdfIn PDF document text
    • http://muzoc.xyz/what_time_is_the_stock_market_open_psttlufb.pdfIn PDF document text
    • https://cdn.sqhk.co/jesovolavig/jd5Tiji/rc_stunt_racing.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483388/normal_5fc8954b7c365.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422645/normal_60276a75e8b16.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405650/normal_5ffc2bfabde6a.pdfIn PDF document text
    • http://worldhold.online/26865473192eqhqb.pdfIn PDF document text
    • http://savadaqwe.space/gipolibukozuwanogekpzovu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498345/normal_60469faae5d9d.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/df02a386-0d60-4f05-9b56-9a1d2026e944/how_to_bias_evh_5150_iii_50w.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d8f697b-0a16-4cfe-a523-bece707a35a2/what_is_the_pantone_colour_for_2021.pdfIn PDF document text
    • https://cf2e1f24-e5f1-4289-9567-3affce9c164e.filesusr.com/ugd/a4ea6c_7b6d7d77d7dc485da565e6c5db05fc88.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/98eb5e4c-dedf-43bd-8c1b-a97d5b189789/xodokas.pdfIn PDF document text
    • https://36c7e617-1221-4173-b726-d5bce2878801.filesusr.com/ugd/610d21_b8ff827518a14ff1864a752740894f08.pdf?index=trueIn PDF document text
    • https://7f793f8f-877f-420e-851b-8bae9ea62a4d.filesusr.com/ugd/78c764_f14d141c03a44181a23ab6f416ae4281.pdf?index=trueIn PDF document text
    • https://9d1e48ad-bcd7-4831-9b7b-7108443a63b6.filesusr.com/ugd/136d07_4544376f45034d10b5f99cda548d3b81.pdf?index=trueIn PDF document text
    • https://2f60c0de-bae8-48d8-8f3f-ce7907f87c52.filesusr.com/ugd/badafb_28b55dceca0645fcabd797754ccd95cd.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9365767-0188-4160-9c91-5a397a6e5646/jemukoridixaram.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eca9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECA9 5140 bytes
SHA-256: 5482d47b5b91bf32c9666a3ced4a05559ea937ce80c163bc821f3d1bc17768ca
font_01_sfnt_off0000fe2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE2F 10464 bytes
SHA-256: b70228c2c86d7ed9dcb5a2acb81c159a141ec79f47906caa29f261cf50ff0eb5

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