Malicious PDF — malware analysis report

Static analysis result for SHA-256 74c6f4a294b43ab7…

MALICIOUS

PDF

38.0 KB Authoring application: Pdftk
MD5: 07cfe01fe9eca16693e951a0ddd940cf SHA-1: 5607cd2ddcd7a8956d72072c7b8cb7b0b9ba341c SHA-256: 74c6f4a294b43ab7bdc0fd3dc8534c86dda60882b9b629bfba70871b254b5eaa
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a mass external link farm, with 19 links pointing to other PDF files hosted on various domains. The document body text, though heavily corrupted, contains phrases related to changing file types, suggesting a social engineering lure. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall' further supports a phishing or malicious redirection intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://statsclothing.com/uploads/1/3/0/5/130590139/befepulomidudok-rufiju-zexuz-tivokufif.pdf
    • http://myers-adams.com/uploads/1/3/0/5/130544823/surigajo-nazejoted-tijasej-wifagujo.pdf
    • http://my-zero-stress.com/uploads/1/3/0/6/130604752/rojuxomeko.pdf
    • http://www.talesfromthefrontrow.com/uploads/1/3/0/6/130621344/4fa52ee.pdf
    • http://oasisbaypv.com/uploads/1/3/0/6/130604767/2789491.pdf
    • http://austinaction.com/uploads/1/3/0/6/130621695/2546125.pdf
    • http://immersivegis.com/uploads/1/3/0/3/130313088/9225440.pdf
    • http://mido4design.com/uploads/1/3/0/5/130551794/3594643.pdf
    • http://naturalproducts.shop/uploads/1/3/0/7/130775501/4071157f7fa.pdf
    • http://painmap.net/uploads/1/3/0/2/130289695/834265.pdf
    • http://gaylordspa.com/uploads/1/3/0/5/130543837/c443b3b84b0f43.pdf
    • http://www.lindastonecarving.co.uk/uploads/1/3/0/2/130272071/kuzegifu.pdf
    • http://incrediblegenius.net/uploads/1/3/0/7/130740217/xipepujoxivavo.pdf
    • http://www.mollyneves.com/uploads/1/3/0/5/130541424/8274617.pdf
    • http://111-ed.com/uploads/1/3/0/8/130874426/rekavanoleviduzusaru.pdf
    • http://lucysblockblog.com/uploads/1/3/0/6/130640162/9636027.pdf
    • http://shudit.club/uploads/1/3/0/7/130776490/2429515.pdf
    • http://thevictressvegan.com/uploads/1/3/0/7/130739423/jevuzajeb.pdf
    • http://bellafurworks.com/uploads/1/3/0/5/130543991/94060c.pdf
    • http://protopottygames.com/uploads/1/3/0/6/130604487/130604487.html#change+file+type+from+pdf+to+word

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003605.bin
7e4262ca29ae0a7d8ea64430b1b49c5d96b9c19a84ae412f29c868a8e22ea961		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3605 8060 bytes

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