Malicious PDF — malware analysis report

Static analysis result for SHA-256 1474a03b5abf339f…

MALICIOUS

PDF

76.1 KB Created: 2021-03-18 12:39:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 2098dcbd819449e0b9cb77b0f9f5c792 SHA-1: c7982aac124dff1473cba265cbcb2664067e89f6 SHA-256: 1474a03b5abf339f6a6e31f55d076c77210e8b4ad76d567006cdfc7f6711fa50
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 0.9998

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/wix?keyword=ffxiv+fashion+report+guide+this+week PDF link annotation
    • http://bomisedoxu.mywebcommunity.org/academic_writing_sample.pdfIn PDF document text
    • http://biomanix.best/temptation_chocolate_images008vr.pdfIn PDF document text
    • https://cdn.sqhk.co/tokebamojos/giIierA/sejimotirekebame.pdfIn PDF document text
    • https://cdn.sqhk.co/kigaratak/fzZggbq/18746896366.pdfIn PDF document text
    • http://instapriz.online/putusa3yz59.pdfIn PDF document text
    • https://zikagedatudupoz.weebly.com/uploads/1/3/4/2/134266226/2055102.pdfIn PDF document text
    • https://diwekivoveludu.weebly.com/uploads/1/3/5/3/135313391/bekuta.pdfIn PDF document text
    • https://digokevun.weebly.com/uploads/1/3/4/7/134747151/ranowufogidi-givetug-dubonorosi-fagapozebif.pdfIn PDF document text
    • https://cdn.sqhk.co/xeloxilava/haeG1ia/wholesale_online_clothing_shopping.pdfIn PDF document text
    • https://cdn.sqhk.co/kominepoli/5TgeMC3/89746757040.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/922c6b51-3a84-4be8-842c-8a1cff600a29/the_missing_season_1_episode_3_review.pdfIn PDF document text
    • https://s3.amazonaws.com/jamuluvuvava/bardoli_weather_report.pdfIn PDF document text
    • http://lusajafimaneru.myartsonline.com/the_forever_war_joe_haldeman_review.pdfIn PDF document text
    • https://s3.amazonaws.com/pirosisob/67693834436.pdfIn PDF document text
    • https://s3.amazonaws.com/debamijizozexo/21968520120.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95e6091b-08a1-4cf3-bcd5-2c2a10144539/nafivofa.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eab7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAB7 5512 bytes
SHA-256: 5ad0b6803ba4d9884075e99046dfe0d068acede9916b27093ce2f4862f46118d
font_01_sfnt_off0000fd96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD96 10924 bytes
SHA-256: 9baa7a2e8a65f729535859bedcd506cd844d16675b3dfc026980d4a7206b2307

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