Malicious PDF — malware analysis report

Static analysis result for SHA-256 62f5063310523215…

MALICIOUS

PDF

80.0 KB Created: 2021-05-16 06:14:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 18bbf131aeddef5290316f204458745c SHA-1: 16742fbef8903fc95490ada248d6081ae7f88080 SHA-256: 62f5063310523215270e44b4528b8377fcde2f9c4743ac23558f37bab6eeb336
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://jottigo.ru/strik?utm_term=burger+king+coupons+breakfast+2020 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4382778/normal_6048680140ba3.pdfIn PDF document text
    • https://cdn.sqhk.co/dijabidasu/PFiaijb/mystic_vale_expansions_ranked.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446923/normal_600f81dc4ad60.pdfIn PDF document text
    • http://freshka.fun/soil_mechanics_formula_sheety3pq8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392869/normal_5fc7ebfc6451b.pdfIn PDF document text
    • http://kpupnov.pro/download_overhot_apk_uptodowna78yv.pdfIn PDF document text
    • http://martakkord.ru/5018920362428mb8.pdfIn PDF document text
    • http://xapiduxirob.mywebcommunity.org/75017216260.pdfIn PDF document text
    • http://okclub.org/ross_carbonite_ultra_firmwarezfgqs.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412900/normal_5fffc1484f8b5.pdfIn PDF document text
    • https://cdn.sqhk.co/waxolulum/jjLiaNb/amazon_seller_central_support_phone_number_2020.pdfIn PDF document text
    • http://agent-ritual495.online/tivaromapozasujryhmo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454821/normal_602f56a436a43.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://noratev.myartsonline.com/baseband_receiver_in_digital_communication.pdfIn PDF document text
    • https://91ca87c2-c493-4616-adaa-fbcec45394e1.filesusr.com/ugd/6116da_d4b1574d4c4b42998333376e836b3433.pdf?index=trueIn PDF document text
    • https://ce55c564-0e79-48ac-bd91-a034cff8554b.filesusr.com/ugd/bd1fc0_25182e8c866e4996883fbf3fddeb03f6.pdf?index=trueIn PDF document text
    • https://9e730ba1-499c-413e-9a09-8a81f8121270.filesusr.com/ugd/0a0016_66d69f82380b4bf8bc567b226265c101.pdf?index=trueIn PDF document text
    • https://801a9f91-e12c-4b3a-b535-42c3eaff61c8.filesusr.com/ugd/d237ef_f228f5f77105498c94318fdf05388b12.pdf?index=trueIn PDF document text
    • https://dfde94ff-8c6c-411d-9c04-f18b57906ec7.filesusr.com/ugd/47ec90_c82252855407476e857a15ba3f1cb55c.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA4A 3168 bytes
SHA-256: 8d11ab16c2de18d659b4b8a1bf2149aebcb48ea28dde077ae16af86d9882f305
font_01_sfnt_off0000f59f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF59F 5676 bytes
SHA-256: 442450f47d33a5c60c2f6482d9ce592e3866196a478f73de04df48a06b6b2bba
font_02_sfnt_off0001090e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1090E 12172 bytes
SHA-256: de031298a3ecb67adfd6bfc7c194e81546670753399cfd4c61e821906b950895

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