Malicious PDF — malware analysis report

Static analysis result for SHA-256 660872e5a254ec8e…

MALICIOUS

PDF

72.2 KB Created: 2021-03-14 12:00:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 986fea105c03d032ebb40ed882ac8e5d SHA-1: 43237ed54f47c6db05bb92aa1e85b3f933f8962c SHA-256: 660872e5a254ec8e76f61f2583df694d266f0429607dba2c606398c3220b2322
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

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 0.9054

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • 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://jottigo.ru/award?keyword=arabya+rajani+pdf+download PDF link annotation
    • https://cdn.sqhk.co/sosobita/esgicE5/potawumineka.pdfIn PDF document text
    • https://cdn.sqhk.co/pabefidinaz/jcjfieH/vidoviduka.pdfIn PDF document text
    • http://jesawukimefix.mypressonline.com/85714986260.pdfIn PDF document text
    • https://cdn.sqhk.co/nomelafu/ihOWidd/19304571568.pdfIn PDF document text
    • http://fukuzowi.sportsontheweb.net/jiruzowebezugavaxulajebe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403270/normal_5fd86ee1213f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421767/normal_603b77231be59.pdfIn PDF document text
    • http://rexevivejegox.scienceontheweb.net/little_fires_everywhere_season_1_episode_4_recap.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366045/normal_5fc9cde9bfdbc.pdfIn PDF document text
    • http://fafabil.getenjoyment.net/bakisusoxezipupipolemozuj.pdfIn PDF document text
    • http://kojazunupetip.mygamesonline.org/zajatatosekofusune.pdfIn PDF document text
    • https://cdn.sqhk.co/jisaside/iePkidL/crypto_stocks_to_buy_2019.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389095/normal_60183caf2cb34.pdfIn PDF document text
    • https://cdn.sqhk.co/gawagunikuw/jachegg/72892395337.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://101c3d73-5e22-4da1-a203-a3a2a794ce88.filesusr.com/ugd/69a512_1f0c906cdeb24ea4ad0bb1b300d3d42e.pdf?index=trueIn PDF document text
    • https://0a37a3d5-a0bf-4e77-8ff5-6127fd08aefa.filesusr.com/ugd/6046c9_79c4397be7424ab5acd9e118003aa5d2.pdf?index=trueIn PDF document text
    • https://37976aa0-f55f-47d3-847a-8d185b13ebf6.filesusr.com/ugd/1d6212_f9a0821f21e04ad7b0f6ba1aa2084eed.pdf?index=trueIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn 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_off0000f223.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF223 5256 bytes
SHA-256: f239325e23a4be5e0a15e68a8d08b4e4edd7eccac2e48f6d7c95776d28b65d4d
font_01_sfnt_off00010428.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10428 10008 bytes
SHA-256: 871e06b3c92f7b412c6a72b6ce07a81c1c629c3fac684c79b5051171925aa7d2

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