Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6b5840ab97e94b6…

MALICIOUS

PDF

77.4 KB Created: 2021-03-15 05:47:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: ec224c60e5d8d4a0951014473063120e SHA-1: 72dec13ef46b5de152280273ef3e24c63d7fc279 SHA-256: e6b5840ab97e94b63bf450e7e2272a0df2609454ac65e41173dfbe2867a969a0
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment 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 0.9998

Heuristics 6

  • 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
  • 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://botokaw.ru/wix?keyword=tradeking+options+playbook+pdf PDF link annotation
    • http://fujigukatujewu.medianewsonline.com/43297680566.pdfIn PDF document text
    • http://mihetos.xyz/love_ni_bhavai_full_movie_online_plalh46f.pdfIn PDF document text
    • http://shtangelkipokupkiitd.online/bsc_3rd_year_chemistry_syllabusqs6uw.pdfIn PDF document text
    • http://repair-planshetov.ru/7972310829gn7de.pdfIn PDF document text
    • http://worabipupe.mypressonline.com/basketball_court_layout.pdfIn PDF document text
    • https://zugozoriv.weebly.com/uploads/1/3/4/7/134770463/5f17d28da.pdfIn PDF document text
    • http://4338bacchus.com/sozemajrf54g.pdfIn PDF document text
    • http://medway24.com/captain_underpants_toys_argosz6sdm.pdfIn PDF document text
    • https://dujomujur.weebly.com/uploads/1/3/4/8/134883281/7d366fa31090.pdfIn PDF document text
    • http://wubowobipevoto.mywebcommunity.org/mubunubagozizanirajom.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lemerisinivum/sunavalos.pdfIn PDF document text
    • https://s3.amazonaws.com/wezukep/86781368150.pdfIn PDF document text
    • https://30d6ba4c-d201-4e26-8f31-a0e059b28788.filesusr.com/ugd/f9b8bb_73b64f190cf74dc985bacf4a5744b1a6.pdf?index=trueIn PDF document text
    • https://e301b21f-f707-426c-a094-6199d4b1a2d6.filesusr.com/ugd/f65518_f5e1b025b69c4f44a8224563b91694d9.pdf?index=trueIn PDF document text
    • https://973697ad-ffa4-4f9d-85cd-0c9d1ea039ee.filesusr.com/ugd/5f5755_cd5a5194961241a9b9119cb6af1395c0.pdf?index=trueIn PDF document text
    • https://03234a85-d811-4a68-a1f9-f7315bf9ccb2.filesusr.com/ugd/079591_5dd03980fd1f453e86b81a741d5a5cf0.pdf?index=trueIn PDF document text
    • http://legabukev.epizy.com/88019333805.pdfIn PDF document text
    • http://farevuzafi.rf.gd/akinator_vip_apk_pure.pdfIn PDF document text
    • http://bogalibamadom.myartsonline.com/49593175482.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_off0000f0d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0D5 5464 bytes
SHA-256: af758938ce4b87c2ce0a49e42b2d99d015b2a494ae92be1f13d773730a5ef382
font_01_sfnt_off0001037d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1037D 11156 bytes
SHA-256: dc548dd161fd14dff7c7ecb19bd9c056ef95fe6e240f8b068d315bef19d8ab20

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