Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd1db712c8d02d7a…

MALICIOUS

PDF

38.4 KB Authoring application: Scribus
MD5: 9fa1dbaf2b8d976e94a53304a713159e SHA-1: ec46cf3edd7d0852633c69e5880bb36f14346620 SHA-256: dd1db712c8d02d7ab71b16bf37972daebaff5b7b2abaa5e1732a294acab1bf32
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO spam or to distribute malicious content. ClamAV identified this as Pdf.Phishing.TtraffRobotInstall, and the ML classifier strongly agreed. No scripts were extracted, and the document body contained mostly garbage data, making it difficult to determine the exact lure.

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://www.hunytung.com/uploads/1/3/0/6/130605097/9877428.pdf
    • http://www.successfulbusinessbuilders.com/uploads/1/3/0/7/130740026/rakape.pdf
    • http://saraberrinoimmobiliare.com/uploads/1/3/0/4/130477882/bukuzinuzekuj.pdf
    • http://www.newbethelbaptistga.com/uploads/1/3/0/5/130590461/xabugu_lijenat_jatesaf_nemuto.pdf
    • http://prelude-to-action.com/uploads/1/3/0/6/130620927/9cddc208.pdf
    • http://dispensable61.goteamonline.com/uploads/1/3/0/9/130969169/lezojep.pdf
    • http://mhsclassof1976.com/uploads/1/3/0/6/130639393/verufizokej-sowutozirarisu-rutakoko-pamoginatorop.pdf
    • http://rootersewerdrainman.org/uploads/1/3/0/7/130776873/kikixojoxus.pdf
    • http://grammarassn.org/uploads/1/3/0/7/130776474/5128745.pdf
    • http://millsdigital.com/uploads/1/3/0/5/130550832/vinufida_gokaxubeb_jimet_sijogupit.pdf
    • http://www.fahadalotaibi.ga/uploads/1/3/0/7/130739165/1667687.pdf
    • http://kelviron.co.in/uploads/1/3/0/3/130323186/bawumipubu.pdf
    • http://getsetgirls.com/uploads/1/3/0/7/130738918/koxalozur.pdf
    • http://nicholasjozaites.com/uploads/1/3/0/3/130313590/xepusojewe_xifuf.pdf
    • http://mrgroucho.com/uploads/1/3/0/2/130288661/jexiz.pdf
    • http://enduringlovememorials.com/uploads/1/3/0/6/130621149/a9951332.pdf
    • http://plantadelphia.com/uploads/1/3/0/6/130604294/f03939c4836.pdf
    • http://webmail.biauk.com/uploads/1/3/0/5/130551267/130551267.html#trane+chiller+extended+compressor+surge
    • http://mhsclassof1976.com/uploads/1/3/0/6/130639393/verufizokej-sowutozirarisu-rutakoko-pamoginatoro

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003a33.bin
9d3737f3e30aa86c6978f05ad693ccf3a47ae32c0ff8b1dd3339181035bc47a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3A33 7668 bytes

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