Malicious PDF — malware analysis report

Static analysis result for SHA-256 8dd6ac9e6763d45c…

MALICIOUS

PDF

71.2 KB Created: 2021-03-27 18:12:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: f51367de840c116c38d94715c338f5e1 SHA-1: 11dd3d2058994e7b4c64ceaf8dbaffda6085cf6a SHA-256: 8dd6ac9e6763d45c617fe2beb78d473122d353f8810a66b9b0de2930594f168d
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 0.9991

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://fokemale.ru/123?utm_term=bodybuilder+image++hd PDF link annotation
    • http://igme.site/348612981932us73.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366337/normal_5fe47315783a5.pdfIn PDF document text
    • http://xorabawik.medianewsonline.com/50421715988.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446915/normal_6057f3cfd15c9.pdfIn PDF document text
    • http://vumexovuvelafe.medianewsonline.com/nikujikaferifuku.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405904/normal_603e88968f283.pdfIn PDF document text
    • http://oneitstore.info/xbox_369_status_code_03-57-00385op.pdfIn PDF document text
    • https://cdn.sqhk.co/vopuvafamiw/8Xid4m1/1670800276.pdfIn PDF document text
    • https://cdn.sqhk.co/dikapagoloza/TGjijda/52820230185.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369911/normal_603398134c47d.pdfIn PDF document text
    • https://cdn.sqhk.co/fujalapevame/cZjbxii/sukite.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418185/normal_5ff03ab5e69db.pdfIn PDF document text
    • https://cdn.sqhk.co/pujixefan/iTwibjb/28078443921.pdfIn PDF document text
    • http://watogoda.mypressonline.com/foninizomegaponarapojupen.pdfIn PDF document text
    • http://seluluxafej.22web.org/mamiya_rz67_digital_back_adapter.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409616/normal_604f72b5a73a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488604/normal_60481566995eb.pdfIn PDF document text
    • http://xozonline.ru/what_is_a_straightforward_person_calledp88kh.pdfIn PDF document text
    • https://cdn.sqhk.co/rigizisojix/geHgeib/talking_ben_the_dog_hack_mod_apk_download.pdfIn PDF document text
    • http://kernig.pro/golejeloxabaripemivrnh0l.pdfIn PDF document text
    • http://ppl-nutrshopfit.website/86139484696otmxx.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sejekaxupoze.epizy.com/aisino_annual_report.pdfIn PDF document text
    • http://zumewozuzetarun.epizy.com/xupedubuwaniwatu.pdfIn PDF document text
    • http://tepisivud.epizy.com/defend_your_castle_android.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_off0000d837.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD837 5352 bytes
SHA-256: 08d59b4c99f040b4ab1a59b65694f224cf89cb546d09a0ef1f8dc850e21deecb
font_01_sfnt_off0000ea43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA43 10788 bytes
SHA-256: 06cdcfd4001bfdc17c6d761226d1408259bd05d4ccf73f82f420926b83020789

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