Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8e50c5141649515…

MALICIOUS

PDF

83.0 KB Created: 2021-03-19 00:10:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 32093f23ad194e0ac9785f1881779152 SHA-1: 32499161e54cce0a1898f12c7479a069a6fbc9a8 SHA-256: a8e50c51416495153524b405368f70122ce1d9c96f0f9e0bb4f6b2d59a9b6b7c
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://gimoguvi.ru/wix?keyword=pixel+gun+3d+apk+hack+2019 PDF link annotation
    • https://jatisarekitikez.weebly.com/uploads/1/3/4/6/134661612/vitapoxefit.pdfIn PDF document text
    • https://teribizekejuxes.weebly.com/uploads/1/3/5/3/135391999/xogewosexez.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404983/normal_5fe75cbc1fa7c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376599/normal_5fc67287a8e45.pdfIn PDF document text
    • http://latibonega.iblogger.org/santa_banta_jokes_in_english.pdfIn PDF document text
    • https://firebawoba.weebly.com/uploads/1/3/4/6/134659507/bc6aea231.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480585/normal_602c2add0e2ad.pdfIn PDF document text
    • http://finovadi.iblogger.org/convert_to_word_doc_docx_and_rtf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501041/normal_605285d8e18d3.pdfIn PDF document text
    • https://zunarorukozem.weebly.com/uploads/1/3/4/0/134016655/loniwagagi.pdfIn PDF document text
    • https://nejajabowiwuxo.weebly.com/uploads/1/3/0/7/130775705/099cf64e6f9.pdfIn PDF document text
    • http://dawezedelofeda.scienceontheweb.net/a_companion_to_analytic_philosophy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379846/normal_601bb706a1048.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445125/normal_604f131822599.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415073/normal_5fd263416678b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453551/normal_6001202b63c28.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382418/normal_5fe4a4a2d1575.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
    • http://vowojuxibaxo.myartsonline.com/99083992139.pdfIn PDF document text
    • http://pubaxazuwatixam.rf.gd/cant_access_seagate_goflex_home.pdfIn PDF document text
    • http://pujumek.myartsonline.com/50887381965.pdfIn PDF document text
    • http://nibubatovavav.atwebpages.com/dell_precision_t7500_motherboard_manual.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_off0000f8d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8D6 5532 bytes
SHA-256: 7be6b9ae949cb5ef45979adad8ceb2b746233d47cd6731527cb2dc77f49a83d4
font_01_sfnt_off00010b98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B98 10788 bytes
SHA-256: 0e7a2058c914295dfe29bd85cd1ab3c2e4b74c2d81d4575ffd1a6061c4111353
font_02_sfnt_off00013031.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13031 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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