Malicious PDF — malware analysis report

Static analysis result for SHA-256 626ce207df924c05…

MALICIOUS

PDF

90.6 KB Created: 2021-05-22 22:59:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: da340c0b7883bd40c30f5fefdebdae52 SHA-1: 4619377b293fc2aa8dc88d123c98f24144632fdf SHA-256: 626ce207df924c05f62e590b27dfa8cf9c2b150900c28e077f3f05b9b8d1203b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many hosted on Weebly, suggesting a link farm or SEO spam operation. The ClamAV detection and ML classifier indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and numerous external links point towards malicious activity.

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 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.
  • 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://dugedepap.ru/strik?utm_term=smokey+and+the+bandit+part+two+cast PDF link annotation
    • https://wasumorupukefu.weebly.com/uploads/1/3/4/5/134581702/e4120302bfd.pdfIn PDF document text
    • https://xovirekines.weebly.com/uploads/1/3/4/6/134648888/07a80a6135b0.pdfIn PDF document text
    • https://menajogatidufe.weebly.com/uploads/1/3/0/7/130740573/7192663.pdfIn PDF document text
    • https://sidatenut.weebly.com/uploads/1/3/5/3/135349940/wiserirudadogef.pdfIn PDF document text
    • https://rirudelibuwa.weebly.com/uploads/1/3/1/6/131606594/mukopikanopam.pdfIn PDF document text
    • https://revafabeku.weebly.com/uploads/1/3/4/7/134708131/1ed9d.pdfIn PDF document text
    • https://totujefova.weebly.com/uploads/1/3/4/0/134096099/mumikere-pegolodusu-gabib.pdfIn PDF document text
    • https://pixipemojawipe.weebly.com/uploads/1/3/4/4/134459682/didoxaxip-mukafifezemobem-kadurezu.pdfIn PDF document text
    • https://zedasadexim.weebly.com/uploads/1/3/0/7/130775923/3587035.pdfIn PDF document text
    • https://gediwidamavuluv.weebly.com/uploads/1/3/5/3/135348022/8026521.pdfIn PDF document text
    • https://lewanodeb.weebly.com/uploads/1/3/4/8/134885095/7638771.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/074b9199-f04a-4774-a459-8e64c169286c/39070662792.pdfIn PDF document text
    • https://s3.amazonaws.com/gavexilatuvitaz/gonotonazumowagutef.pdfIn PDF document text
    • https://s3.amazonaws.com/bejexe/eric_foner_give_me_liberty_chapter_15_outline.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf6825e6-3e3d-4e0a-8ceb-b4d6a3fce4c2/the_book_of_life_j_krishnamurti.pdfIn PDF document text
    • https://s3.amazonaws.com/dipafuxe/jerimul.pdfIn PDF document text
    • https://s3.amazonaws.com/sefiwegegagu/budikedewezovitonuxabi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2484d380-3d66-429c-85aa-e32cfe771f68/how_to_transfer_videos_from_canon_to_computer.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001220d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1220D 5784 bytes
SHA-256: 9ee8f60f744d2294f922af65f53f7828d42eeb7d439d4a415dd9dfee2005ae7e
font_01_sfnt_off0001359d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1359D 12032 bytes
SHA-256: c1cc7d94e94cc8a2cd9e9486c7786343b989bd5b5eab5947e37cd62127674858

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