Malicious PDF — malware analysis report

Static analysis result for SHA-256 a13f4fd1781bb123…

MALICIOUS

PDF

42.6 KB Authoring application: PDFedit
MD5: b1a674be9437ae370f1af655116f167d SHA-1: dd3f0ac44a4da0b37a91d606b5d5f67e07736ba5 SHA-256: a13f4fd1781bb1238caa27bb3a2c42b9dbc380fb02d4900d4542a70a2ce20ddb
150 Risk Score

Malware Insights

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

The PDF document was flagged by multiple heuristics, including a critical finding for a link farm containing 19 external PDF links. The ML classifier also assigned a high probability of maliciousness. The primary attack pattern involves redirecting users through a multitude of links hosted on various domains, likely to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://evolutiontaco.com/uploads/1/3/0/5/130547527/6822288.pdf
    • http://nursevisit.org/uploads/1/3/0/7/130775016/608ac82025235b1.pdf
    • http://bumbleandsprout.com/uploads/1/3/0/6/130621596/gafejusozoji-jitukigije-rutotiz-bijuxaroruwiwo.pdf
    • http://kiinteisto.eu/uploads/1/3/0/2/130287500/3535758.pdf
    • http://mustardseedmarketinggroup.com/uploads/1/3/0/7/130775049/c787e9.pdf
    • http://www.sunsetsixers.com/uploads/1/3/0/5/130550782/sazojigaka.pdf
    • http://pintsizechef.com/uploads/1/3/0/2/130272937/zazirazerowuti_zemoxa_wejananitox_dadejotin.pdf
    • http://evyandelie.com/uploads/1/3/0/7/130738482/18b28311073ee.pdf
    • http://live5tock.com/uploads/1/3/0/3/130323167/14dada07.pdf
    • http://adan.pt/uploads/1/3/0/4/130488396/f4242a.pdf
    • http://mingocarecbd.com/uploads/1/3/0/6/130639272/gunilafivap.pdf
    • http://outofobedience.com/uploads/1/3/0/2/130287965/3490661.pdf
    • http://bolaparada.site/uploads/1/3/0/5/130539553/5016406.pdf
    • http://kirstencarabin.com/uploads/1/3/0/6/130605390/fb667.pdf
    • http://mlj-law.com/uploads/1/3/0/8/130874587/gizakoriwajofef-femoxu-povedufemenox-zulimo.pdf
    • http://whatgiftstobuy.com/uploads/1/3/0/6/130605030/7470124.pdf
    • http://0frenchpolishing.com/uploads/1/3/0/5/130551342/supopereke.pdf
    • http://mnsbearings.com/uploads/1/3/0/7/130776578/e1d540343f8817.pdf
    • http://prestige-overseas.in/uploads/1/3/0/7/130739164/b724acc.pdf
    • http://74-123-72-38.mgwnet.com/uploads/1/3/0/4/130483856/130483856.html#pan+card+name+change+status+online
    • http://kiinteisto.eu/uploads/1/3/0/2/130

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e17.bin
32b54217619f9438721b423dc2f4f4da0f78781b0811ea49af2be6b0310ecf56		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2E17 16164 bytes
font_01_sfnt_off000045ec.bin
ce4b31d258a0ed3b4d42e10663f0b80a64f9866c87773803cb0610e0def32c39		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45EC 8632 bytes

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