Malicious PDF — malware analysis report

Static analysis result for SHA-256 de8aa1d2d26d00cf…

MALICIOUS

PDF

52.0 KB Authoring application: Poppler-utils
MD5: 439bbcb719ce9bad2d4fe67f0925a73f SHA-1: 7412d011d436f41990370a4c526d70d9576f4cc7 SHA-256: de8aa1d2d26d00cf23b7881f8a8b00ea2aec35ecf8b4eb81d08ce6260e61aab4
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links to external PDF documents hosted on various domains. This behavior is indicative of a link farm or a phishing campaign designed to drive traffic to malicious or spam content. The ClamAV detection further supports its malicious classification. No scripts were extracted, and the document body content is largely unreadable, making it difficult to determine the exact lure.

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://menibamaw.ecsog.ru/uploads/2020/01/28/nawatasigug_xejalunewix.pdf
    • http://reflectionssalonspa.us/uploads/1/3/0/5/130539455/1041345.pdf
    • http://uciesl.com/uploads/1/3/0/3/130323727/rajepivo.pdf
    • http://polychromatiks.com/uploads/1/3/0/5/130543663/potukejepilug.pdf
    • https://vebesose.weebly.com/uploads/1/3/0/4/130475994/susanidiroxer.pdf
    • http://tkobg.com/uploads/1/3/0/2/130272377/2866574.pdf
    • http://300davidsonave.com/uploads/1/3/0/5/130588376/1669329.pdf
    • http://energybasedhealth.com/uploads/1/3/0/2/130273814/1230697.pdf
    • http://zopapogif.katalog-z.com/uploads/2020/01/28/37fd4a3e92d.pdf
    • http://bernardobellostudio.com/uploads/1/3/0/6/130605405/130605405.html#second+hand+sheet+metal+cutting+machine

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001002.bin
079907d178764ea608429120c6f8678a00c2603730b4bb62bad90a1c731946e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1002 9428 bytes

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