Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a6066e363f8d45b…

MALICIOUS

PDF

68.1 KB Created: 2020-11-22 20:37:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: cb08a3608dde9ba90e5e855ac0ee8ff8 SHA-1: 11c2218e5347da9855623dca4bdd7988154d3834 SHA-256: 1a6066e363f8d45bf3e46e05f3c6df7c9788f564a5cfc6dcc549e76eb2b10472
156 Risk Score
Tags
free-cdn-ebook-manual-lure

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 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://traffking.ru/aws?utm_term=12v+geared+dc+motor+datasheet PDF link annotation
    • https://lamekibig.weebly.com/uploads/1/3/4/6/134652122/ff61d33f.pdfIn PDF document text
    • https://mekuxiwefajup.weebly.com/uploads/1/3/0/7/130739023/1953df354c.pdfIn PDF document text
    • https://ganulexotugoris.weebly.com/uploads/1/3/1/1/131164012/mivapumanorisu_zasevile.pdfIn PDF document text
    • https://popekuzukije.weebly.com/uploads/1/3/4/4/134471955/6305887.pdfIn PDF document text
    • https://xulajaxosu.weebly.com/uploads/1/3/4/3/134366267/petulewisote.pdfIn PDF document text
    • https://tebisemilemuwi.weebly.com/uploads/1/3/4/8/134864217/099528c203720.pdfIn PDF document text
    • https://zozolesib.weebly.com/uploads/1/3/4/6/134631165/badoveb.pdfIn PDF document text
    • https://bijufipenonovo.weebly.com/uploads/1/3/4/5/134529550/diramusuzufolijul.pdfIn PDF document text
    • https://sutogibigasoju.weebly.com/uploads/1/3/1/0/131070189/kifopiredi.pdfIn PDF document text
    • https://basitonivi.weebly.com/uploads/1/3/4/5/134584834/db645480d2e5e39.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/vipuxafol/93677864766.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/540eb9e0-a42b-44f5-99ee-77ba69ca53d0/webawidavilopevitufatipi.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/lipibidegolefimilakolisa.pdfIn PDF document text
    • https://s3.amazonaws.com/rizijubovapuk/xuzomebigabemiwikesuzaze.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/deveguwi.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_off0000cd66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD66 5472 bytes
SHA-256: d94cdae196a2e8d5c5159ac9ea57f76727ee1cd63a5f11bb10f67e5426ae30a6
font_01_sfnt_off0000dfe1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFE1 10460 bytes
SHA-256: f10c6aea9032d589dc3c575bfd8f8a1312486ad3273b876f3db6091c10bcb578

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