Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f289b582fabcda3…

MALICIOUS

PDF

34.9 KB Authoring application: Serif PagePlus
MD5: 539788a15d94a408d34912223181d60a SHA-1: d1c3a31d35cebf3303679973f4b0f3c792df9bcb SHA-256: 1f289b582fabcda382a928061edc9e64c76cee15bd377f88e5a373c212141b19
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded URLs pointing to external PDF documents hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content, as suggested by the 'PDF_SEO_LINK_FARM' heuristic. The ClamAV detection further supports its malicious nature. No scripts were extracted from this sample, limiting the ability to determine specific payload delivery or execution methods.

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://rspecfieldmanual.com/uploads/1/3/0/6/130604645/579115.pdf
    • http://avidvoid.com/uploads/1/3/0/7/130740376/e4ed132f5.pdf
    • http://helpgarret.life/uploads/1/3/0/5/130589213/lidazirukikuba_dodil.pdf
    • http://hostmaster.kenswickcapital.com/uploads/1/3/0/5/130541351/1549259.pdf
    • http://apyprintsnow.com/uploads/1/3/0/2/130288915/0c2b777a10b5ba.pdf
    • http://mta-sts.mail.athleticspromotionltd.com/uploads/1/3/0/3/130323754/rimesosejinew.pdf
    • http://botmidasteam.com/uploads/1/3/0/2/130288522/9928354.pdf
    • http://pietrolesca.com/uploads/1/3/0/8/130814241/8382622.pdf
    • http://stand2serve.org/uploads/1/3/0/2/130288762/nuxozi.pdf
    • http://www.physiohealth.org.uk/uploads/1/3/0/4/130477952/b16eb44f.pdf
    • http://andreamingels.com/uploads/1/3/0/6/130639175/pudapow-menuwelerit.pdf
    • http://baijialegongshi.br3h.com/uploads/1/3/0/7/130775870/130775870.html#project+acknowledgement+sample

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031c2.bin
29e389c60b65a281e329bdec4d09cd238f759554fb9e6863de74eb1d4a2bdd49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31C2 7776 bytes

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