Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6fa2a7dcdf645cc…

MALICIOUS

PDF

80.3 KB Created: 2021-03-27 14:29:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: f1a62183539eb08f484d957f09552019 SHA-1: 218e06c73ce66345a547315e1cd6ce5501cfb0b4 SHA-256: d6fa2a7dcdf645cc07fc0b51501e72b1b8d8e55fc9d0a899ed0f7ea6bd329d2d
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://jumiwimov.ru/wix?keyword=pac+man+championship+edition+dx+trophy+guide PDF link annotation
    • http://pasendapp.online/14775315064jjiaq.pdfIn PDF document text
    • http://bestpriceforukraine.xyz/dodixomom8h4e.pdfIn PDF document text
    • http://xevamoz.mygamesonline.org/sentimental_journey_lyrics.pdfIn PDF document text
    • https://cdn.sqhk.co/lagidexetin/gffgeid/bewegaza.pdfIn PDF document text
    • http://zokidinodajives.getenjoyment.net/58540545684.pdfIn PDF document text
    • http://dvigatel.guru/forex_for_beginners8gfms.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480393/normal_5fd918ddb13a1.pdfIn PDF document text
    • http://befotuke.mywebcommunity.org/nowadizifafiritife.pdfIn PDF document text
    • http://electriccannoz.club/50002957496i2xb4.pdfIn PDF document text
    • https://cdn.sqhk.co/sipebesoxu/gjpcJjg/tozogivubimafoduvoge.pdfIn PDF document text
    • http://wotidoteked.mywebcommunity.org/xedumepibutisokevuredol.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393189/normal_5fec0fc1b7e40.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482407/normal_5fedea7c87fff.pdfIn PDF document text
    • https://cdn.sqhk.co/kuwusemob/CeW8Yie/rimidozilitimonofitiga.pdfIn PDF document text
    • http://forpost-electrica.ru/atv312_manualjuxbg.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/f02312bf-a180-40ae-bf82-2597049887b2/10493891256.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10ccbf81-0c25-481c-8b63-8f437729cf47/55424420370.pdfIn PDF document text
    • http://lajovaputap.myartsonline.com/tozodomopefenisugulu.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d42e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD42E 5508 bytes
SHA-256: ff280a37644658d96ffd8546ea5c4fd042a2ae0559dc83132beb58ab2e0c9191
font_01_sfnt_off0000e6b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6B9 11824 bytes
SHA-256: 2d92aa9be9d514572f45b8f07d78095a066e40d0f59b77445e8789faca109ff1
font_02_sfnt_off00010c8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C8B 16700 bytes
SHA-256: 1a732ee8d4c0e685a8f43eabd4b18e006b43f3fd65957cc47f92b5ed5e38d05a
font_03_sfnt_off00012391.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12391 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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