Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d6265b8c4f9d917…

MALICIOUS

PDF

75.4 KB Created: 2021-04-05 03:15:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 516f06eb01109a65283de98b0264099f SHA-1: b0e446cacd31bf74092c5f6e919ef5ba5ef77583 SHA-256: 0d6265b8c4f9d917edb27819f2832b2c5305a9ebaa54b475bf801ee1f32ef923
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://maypoin.ru/award?keyword=after+12th+commerce+courses+list+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4459467/normal_604677ccd4944.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454990/normal_6064fc70da26b.pdfIn PDF document text
    • http://riluvujabadi.iblogger.org/pratidin_newspaper_today_bengali_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365562/normal_60367ed02757b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379615/normal_60279a6b23ada.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488317/normal_5fd30d58eb561.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d1e6aceb-f258-402f-b59e-92ecb386693c.filesusr.com/ugd/2cc58f_d7ee46f1af2140c1bcc1fb9eca8a9461.pdf?index=trueIn PDF document text
    • https://89e5ed4a-33eb-42a6-b5f1-9fc07ea1e15b.filesusr.com/ugd/ff68bb_70f9f203c71f42e890e55931789e4e8b.pdf?index=trueIn PDF document text
    • http://rapudipawuv.epizy.com/87272238682.pdfIn PDF document text
    • http://malunazix.rf.gd/lewis_mumford_what_is_a_city_architectural_record_1937.pdfIn PDF document text
    • http://wosaxadef.rf.gd/xazopijafaz.pdfIn PDF document text
    • http://zifovusadenu.rf.gd/faux_calligraphy_for_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/pigolo/depeburogadizedok.pdfIn PDF document text
    • https://s3.amazonaws.com/woxotopapozokev/google_chrome_browser_apk_for_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/299436e3-4996-4fc9-9e18-bc4f2e97c98b/24_hour_clock_printable_templates.pdfIn PDF document text
    • http://burumuniwofiri.rf.gd/when_god_winks_at_you_summary.pdfIn PDF document text
    • https://8c285b57-3156-47ce-881b-df665acc117b.filesusr.com/ugd/8d46c2_3bb55ddc966e47a9b6a1c3bdf2dc9c96.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/5215615199.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9df027db-c36d-4464-8654-4e9f51a8449e/12554611820.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab6109f1-ecd6-4b3f-9ce3-51cab7fbc39b/firepotoruzidejiribubunij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bc1a809-b433-4d9f-b1e6-d66ad497b065/safety_1st_thermometer_change_to_celsius.pdfIn PDF document text
    • https://1cbf0fd9-62af-4102-a3dc-982f361539e7.filesusr.com/ugd/bfbc46_202f19c57c96412f874dbb53271eeed6.pdf?index=trueIn 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_off0000e6f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6F7 5356 bytes
SHA-256: 28036bdd7878a4a2e425939c9132ed5cdb0126ce81d9d3e843ed9efb46755f48
font_01_sfnt_off0000f917.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF917 10948 bytes
SHA-256: b86613217a66de90a6de85e5efeb27059f7a762b52494e59e9e523eb958258da

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