Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6469997bfda4dbc…

MALICIOUS

PDF

46.1 KB Authoring application: Mobipocket Creator
MD5: 5325bb53266dd172df992c0ae7d4da67 SHA-1: 71c19ca33db8ccbb9e3975c858e667e052c42854 SHA-256: d6469997bfda4dbc9d2db05ee65bb7c00d671cf13d904bc2ae4b7b24b7611407
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection also flags this as a phishing-related threat. The document body, though partially corrupted, contains text related to medical conditions and includes several of the extracted URLs, suggesting a lure to external content.

Heuristics 3

  • 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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://pitup.gorlobolit.ru/uploads/2020/01/27/6958574.pdf
    • http://heartst.art/uploads/1/3/0/6/130603865/jesawimadiw_sapifonorefude_bejagevubena.pdf
    • https://radedoxa.weebly.com/uploads/1/3/0/2/130289424/0b2aaa.pdf
    • http://smartgtrack.com/uploads/1/3/0/3/130379352/e2e8305d8d.pdf
    • http://cwegcommunity.org/uploads/1/3/0/3/130379150/sogoni.pdf
    • http://nikkinormanphotography.com/uploads/1/3/0/4/130436494/gimutirowuwikuzade.pdf
    • http://towa.flirtpiraten.fun/uploads/2020/01/29/6202792.pdf
    • http://ankezimmermann.ca/uploads/1/3/0/5/130588672/130588672.html#neck+nerve+impingement+shoulder+pain

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001126.bin
13a705c9602bbd0e5eb5feffd4e2975042d0886beac27cb9dca1b61177e4b918		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1126 7748 bytes
font_01_sfnt_off00006e9c.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E9C 16036 bytes

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