Malicious PDF — malware analysis report

Static analysis result for SHA-256 df02e67697d45ced…

MALICIOUS

PDF

74.5 KB Created: 2021-03-25 16:49:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 72108affbe26990a1d0f5ba9d9652bbd SHA-1: 5afc8b65f27594e246381becdd10cb0ea91f5f33 SHA-256: df02e67697d45ced026b85ada76a4e94ccc89272f2a1b52690c964a8262b5f67
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 0.9990

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://soxebez.ru/strik?utm_term=how+to+remove+dyson+dc50+brush+bar PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4469349/normal_5ffd6f5da08b5.pdfIn PDF document text
    • http://zopixulowi.iblogger.org/bengali_calendar_1426.pdfIn PDF document text
    • http://koteyarn.moscow/one_reason_is_that_synonymmvdqj.pdfIn PDF document text
    • http://xupevagadozojad.22web.org/avoidant_personality_disorder_book.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483335/normal_5fe8f4f038919.pdfIn PDF document text
    • http://dirujadejefogax.iblogger.org/74362872421.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453743/normal_5fd85ac6b53e1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408995/normal_5fed2267e95ce.pdfIn PDF document text
    • http://teachost.com/tokyo_ghoul_manga_volume_12589vus.pdfIn PDF document text
    • http://duzatizej.iblogger.org/42914034720.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376096/normal_603b736d0ca1a.pdfIn PDF document text
    • http://ttttrrrr.space/7721711643065w7n.pdfIn PDF document text
    • http://tederurokeroga.iblogger.org/pobukexadujubode.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/b24b569b-b148-462a-9565-8e80ec410955/96423244737.pdfIn PDF document text
    • http://nixelotiseze.epizy.com/nuxowezidagu.pdfIn PDF document text
    • http://luzutajezilako.rf.gd/70081672274.pdfIn PDF document text
    • http://kupomegofoku.epizy.com/how_isotopes_decay.pdfIn PDF document text
    • http://mulusatore.rf.gd/xabasajotixesiwejatus.pdfIn PDF document text
    • http://lukugebov.rf.gd/37485015082.pdfIn PDF document text
    • http://lebelolejesupo.rf.gd/oxidative_phosphorylation_process.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a2ad419-073a-416e-8cbe-5fb3b270a3f1/wajele.pdfIn PDF document text
    • http://zezogif.rf.gd/66265491342.pdfIn PDF document text
    • http://joxumokuri.epizy.com/13939135754.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_off0000d3fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3FA 5600 bytes
SHA-256: 66b5b9f5b3be943045a62679f0f9fcafcd45e48d6b0462f2058c5e3b3e8aff7b
font_01_sfnt_off0000e6ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6EC 11456 bytes
SHA-256: f54df485e80cfce430ce6c46e16cd8b0450ddc0ec427075f1f790ab4688349b5
font_02_sfnt_off00010df1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DF1 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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