Malicious PDF — malware analysis report

Static analysis result for SHA-256 765d1854b29b5ef3…

MALICIOUS

PDF

76.7 KB Created: 2021-03-15 08:06:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: ecf85a9c1b0f4f83647916d70a0023c3 SHA-1: b35aacb24b41cc028cac0d22e469f114f8a068e6 SHA-256: 765d1854b29b5ef37150eac71570396a587520d1bd71b2d59b0d27d3d49f95ee
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://lozipotod.ru/wix?keyword=zero+launcher+apkmonk PDF link annotation
    • https://cdn.sqhk.co/ropobemuma/Xideid2/journal_of_health_sciences_impact_factor_2017.pdfIn PDF document text
    • http://lakegefufen.scienceontheweb.net/puxowabegolizatekanemu.pdfIn PDF document text
    • http://gopidap.scienceontheweb.net/wajolawajitobefagijifim.pdfIn PDF document text
    • http://lnstagram-blue-ticks.com/13227097147y3xmi.pdfIn PDF document text
    • https://cdn.sqhk.co/sadirorig/gh3mict/mimedolunuxodemelowu.pdfIn PDF document text
    • http://jirusulixozome.scienceontheweb.net/xesetirudegimikuwo.pdfIn PDF document text
    • https://cdn.sqhk.co/wusakituzu/XjhXhho/call_of_duty_for_ps4_price.pdfIn PDF document text
    • http://hermidkovo.info/napiwogefuvugijusejukfl920.pdfIn PDF document text
    • http://nibelv.xyz/59065081768fisxr.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/dabe1c6e-732a-4f67-b3fa-ae6a558ccec4/timuvoziliko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34a48570-f473-4287-99c6-302704a0d7a8/does_wild_tiger_lose_his_powers.pdfIn PDF document text
    • https://ebbb41b5-b8b7-4bfc-9e1b-23e79ad93844.filesusr.com/ugd/5eba67_c0c60be97ee84ace840d332f2d07f732.pdf?index=trueIn PDF document text
    • https://75a697d3-84f0-44cf-bab9-f05e37020c50.filesusr.com/ugd/7c3584_e2531bb3a42d4ed0a487ece5abbfddb9.pdf?index=trueIn PDF document text
    • https://ae0ecf71-49bb-4ac4-bba4-d0f2a20d1af9.filesusr.com/ugd/668a47_3dbb8a45d3c84d4a87aa024f2da43e76.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0b3a7c0-b20a-46d0-83ff-5b6aacd2fa23/69225075284.pdfIn PDF document text
    • https://s3.amazonaws.com/nilafafakem/21599915913.pdfIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/wenalov.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_off0000f118.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF118 5016 bytes
SHA-256: e31cc01066ed347a5bb56c7ac4d7f909a90072e6cbd83fa4bc7251c7b64c9ed3
font_01_sfnt_off000101ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101FF 10628 bytes
SHA-256: d848125e56313355666ee68233328b9f548c7df62e942cbbe51b57c3beb469a7

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