Malicious PDF — malware analysis report

Static analysis result for SHA-256 8feb9fda1575edb6…

MALICIOUS

PDF

36.0 KB Authoring application: LibreOffice
MD5: f151d01dee41677be535689e6473bdaa SHA-1: 3c0f7156fd3751b742e613c469f7336940ed65ea SHA-256: 8feb9fda1575edb600c79c02ba281dcf7134a1fa33baf5621beeb134df88c56e
150 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, a common tactic for SEO poisoning or phishing campaigns. ClamAV identified the file as Pdf.Phishing.TtraffRobotInstall-7605656-0, and a machine learning classifier also flagged it as malicious with high confidence. The embedded URLs likely lead to further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://metalmorphicrv.com/uploads/1/3/0/2/130287441/nevorileram_kanekexofeg_tezipap_jelerilutifef.pdf
    • http://whenlifegoeswrong.com/uploads/1/3/0/6/130639904/gomopafunu_liboxakanaxom.pdf
    • http://lfplasteringcontractors.com/uploads/1/3/0/6/130603836/pelagubife_wobugotizebo.pdf
    • http://midwestmusclebullyclub.com/uploads/1/3/0/4/130476816/bozawozozu-dolaju.pdf
    • http://abefitch.com/uploads/1/3/0/2/130273584/sawolax.pdf
    • http://sunicredit.com/uploads/1/3/0/7/130739830/pubokep.pdf
    • http://linda-schubert.com/uploads/1/3/0/5/130551618/datazeko_pafavujeved_ruvelejafiro.pdf
    • http://electro-haptics.com/uploads/1/3/0/6/130604731/xubijomulaweme.pdf
    • http://moses-michael.com/uploads/1/3/0/3/130323324/zefovokagux.pdf
    • http://gonewberry.com/uploads/1/3/0/5/130545199/8737983.pdf
    • http://plunkettandgibson.com/uploads/1/3/0/7/130775997/nekimozil_ludikazogezab_sapajukube_xenuliwuvi.pdf
    • http://gregjiel.com/uploads/1/3/0/5/130588478/130588478.html#rexroth+hydraulic+gear+pump+pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001fc4.bin
e8a490cb232527f366d744a0ad3d1ecf3a17a557d7d156d95b9239e97a8bbec3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1FC4 16064 bytes
font_01_sfnt_off000036db.bin
525dbe0d5cffe4684cda7e70a57b89c893490959f23acfa914f5444ec0ed5cba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x36DB 7284 bytes

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