Malicious PDF — malware analysis report

Static analysis result for SHA-256 464cd0f63a0addaf…

MALICIOUS

PDF

32.8 KB Created: 2020-06-08 07:50:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: da56341a205a2e389c61c30f9da05d24 SHA-1: cb1f0080a60525b520bf9e7cf4b9681dc1a45d12 SHA-256: 464cd0f63a0addaf908ec2fa2471ba6e38dce0fe26ecc5c10408839170b08715
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous external links, a technique often used for SEO poisoning or to redirect users to malicious sites. The document body mentions "Pok mon video games games" and includes URLs that appear to be part of a link farm, suggesting a lure to attract users interested in that topic. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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 http://d5i81.slpny.com/uploads/1/3/1/3/131381204/131381204.html#pok%25C3%25A9mon+video+games+games
    • http://clotildebremondavocat.fr/uploads/1/3/0/4/130483499/jowezoduwagonapupoj.pdf
    • http://laverneoptometry.net/uploads/1/3/1/1/131163851/safoliv.pdf
    • http://mail.anotherwayllc.com/uploads/1/3/1/3/131379680/refozasefapugo.pdf
    • http://ottimizar.com/uploads/1/3/0/7/130738680/5363517.pdf
    • https://rapapoxu.files.wordpress.com/2020/06/zaliwilodowada.pdf
    • https://bamisenu.files.wordpress.com/2020/06/kikesaminusun.pdf
    • https://nizulaxowamo181495606.files.wordpress.com/2020/06/gixokenunirizabegoka.pdf
    • https://woxuriro.files.wordpress.com/2020/06/jaloriwemilapugenew.pdf
    • https://rafipore.files.wordpress.com/2020/06/66275356379.pdf
    • https://povepaju257855884.files.wordpress.com/2020/06/84056254527.pdf
    • https://jusifubudivi.files.wordpress.com/2020/06/duvupamuxumirujutuku.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000056ae.bin
d7241692ac30fccf7048d075b68b8a89f3633cb551eb74e2a440239501190a4d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56AE 9392 bytes

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