Malicious PDF — malware analysis report

Static analysis result for SHA-256 54a5bae1c11c01c8…

MALICIOUS

PDF

32.9 KB Authoring application: SWFTools
MD5: 2e38408776998bf336d1fd308584eac4 SHA-1: b06da168686fe692328a8fabba62b096c50cbc62 SHA-256: 54a5bae1c11c01c81d2a8dd09f04fcb1e0546c41b441a8f052848c3b078f03a8
150 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 distribution mechanism for further malicious content, as suggested by the 'PDF_SEO_LINK_FARM' heuristic. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious intent, likely related to phishing or traffic redirection.

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://mingyiliu.me/uploads/1/3/0/4/130489833/bibifami.pdf
    • http://www.lisamann06.com/uploads/1/3/0/6/130639443/4482262.pdf
    • http://quincyquarrymuseum.com/uploads/1/3/0/2/130288775/vibina-pejerig-muvozijadenija.pdf
    • http://peakrescue.com/uploads/1/3/0/4/130483477/mivek.pdf
    • http://larkappella.com/uploads/1/3/0/2/130289282/97855.pdf
    • http://www.liganacionaldegalgos.com/uploads/1/3/0/5/130551251/1334239.pdf
    • http://hostmaster.house-of-yoga.ch/uploads/1/3/0/6/130639115/eb6dd.pdf
    • http://oregonhomesandranch.com/uploads/1/3/0/3/130379266/017ab4b327570.pdf
    • http://lafayetteschoolrestoration.com/uploads/1/3/0/5/130551729/8084892.pdf
    • http://bitewize.com/uploads/1/3/0/8/130814402/5d4d3cea.pdf
    • http://whymegandoonan.com/uploads/1/3/0/2/130272481/tokoji-sejuzofasadi-tepub-xasedixusug.pdf
    • http://plania.it/uploads/1/3/0/6/130605447/2482621.pdf
    • http://triosreadydentallaboratories.com/uploads/1/3/0/6/130605405/nutirumaxis.pdf
    • http://adsl-63-204-18-9.benefitplans.org/uploads/1/3/0/6/130639327/130639327.html#ethiopia+grade+11+history+textbook+pdf
    • http://plania.it/uploads/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000027b3.bin
371da374041475730feec6193edcc6503cf3a81a47ba110d81bc10c419c19bf3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27B3 7784 bytes

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