Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8717a47f8fea92d…

MALICIOUS

PDF

78.4 KB Created: 2021-04-29 04:03:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: af09d76395130bfc34195fa244862fbf SHA-1: 9a0f6b4e88d9823a2147f251ede5d8f4eec5e4b8 SHA-256: f8717a47f8fea92d3ea3860352b6bf01aa7a9f1b57539191729697406132c03a
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 0.9996

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/strik?utm_term=what+choke+fits+browning+a5 PDF link annotation
    • http://sevesasineja.22web.org/xufitalitekebukidoleki.pdfIn PDF document text
    • http://ganivobuka.iblogger.org/aliens_1986_script.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495838/normal_5ffbbdb19e8df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368969/normal_600bbd688b76a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464053/normal_5ff5ddbc2472e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486537/normal_601f3d4570672.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://s3.amazonaws.com/lorifawuvawot/lawomudema.pdfIn PDF document text
    • https://s3.amazonaws.com/gofilafixu/60667545574.pdfIn PDF document text
    • http://tobesonev.rf.gd/speed_vpn_for_windows_8.pdfIn PDF document text
    • http://faberaladaruz.epizy.com/tigepazulikal.pdfIn PDF document text
    • http://zofigofaka.epizy.com/eclipse_user_guide_for_avn_5502d.pdfIn PDF document text
    • http://jovebaben.epizy.com/movies_hd_bollywood_2017.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74b946b5-aeb9-4f9c-97ec-67fe43841541/hp_envy_4500_ink_number.pdfIn PDF document text
    • http://gemebam.rf.gd/interview_questions_for_english_teachers.pdfIn PDF document text
    • http://rinikebamujigiz.rf.gd/mimerugikidaduli.pdfIn PDF document text
    • https://s3.amazonaws.com/fipijife/34595181163.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59605723-aaa8-40b9-b8c2-4eb4dc9ddd59/homelite_electric_chainsaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68284c7b-5fae-4c3a-95e4-4af56a857570/58640269179.pdfIn PDF document text
    • http://lalowaxe.epizy.com/41059507722.pdfIn PDF document text
    • http://fakopasetiboni.rf.gd/treatment_pulmonary_embolism_guidelines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f814dfa6-2b80-4c07-85c3-921b3d34e34f/bufiwatifu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59c61a1c-9d0f-4c23-b176-1a0e48e67a4e/check_maine_drivers_license_status.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_off0000e77e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE77E 5332 bytes
SHA-256: 334892b157ca799303e22fcae51d0f61e0cd734cfb07ea02e0f34fe3e718e38a
font_01_sfnt_off0000f9b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9B2 10668 bytes
SHA-256: 9c815b78a5478db07fe48e7cd6c06c71627728cc948bd630b1f7ec48e53c2836
font_02_sfnt_off00011e42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E42 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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