Malicious PDF — malware analysis report

Static analysis result for SHA-256 0554a05ba0c0abd3…

MALICIOUS

PDF

41.2 KB Authoring application: QPDF
MD5: 13fb2d0589b24d0f6a3663e4bd35c212 SHA-1: fe6b17b8095cc4d4fd5d3a978723ac87cac24637 SHA-256: 0554a05ba0c0abd3dda23e3b8aa95afd2b80ef25f8d9d4a5873eebf45a6f6bf2
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded links to other PDF files, masquerading as SAP ABAP interview questions. This technique is commonly used for SEO poisoning or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution.

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://southernwildproducts.com/uploads/1/3/0/4/130435637/1838681.pdf
    • http://calmongoods.com/uploads/1/3/0/5/130538817/wadekes-wexifap-roruj.pdf
    • http://300wyandotte.com/uploads/1/3/0/2/130272631/gonedulisi.pdf
    • http://kwpetcarecypress.com/uploads/1/3/0/6/130620826/vakadudezorav.pdf
    • http://oakdellfarm.com/uploads/1/3/0/6/130621051/3882451.pdf
    • http://mtbreizen.nl/uploads/1/3/0/2/130270873/4132718.pdf
    • http://assentive.net/uploads/1/3/0/2/130288380/92452.pdf
    • http://sems4acultureoflife.org/uploads/1/3/0/4/130476821/7883185.pdf
    • http://monarchrev.com/uploads/1/3/0/6/130605506/7846424.pdf
    • http://blogg.allegro-as.no/uploads/1/3/0/7/130775731/kuraripogubex.pdf
    • http://myautosaver.com/uploads/1/3/0/7/130740498/8728704.pdf
    • http://vthomeschoolnetwork.com/uploads/1/3/0/6/130604085/aeed1c502.pdf
    • http://www.caretrainingconsultancy.co.uk/uploads/1/3/0/5/130542755/fa3dbbd96c7.pdf
    • http://frymil.com/uploads/1/3/0/6/130639100/48eb77edadc.pdf
    • http://smartpromoting.com/uploads/1/3/0/7/130776123/duzas.pdf
    • http://storedesigns.in/uploads/1/3/0/6/130621983/820c70919.pdf
    • http://minhquando.com/uploads/1/3/0/6/130621279/ad3d31556cd.pdf
    • http://zrvcgh.bdgct.com/uploads/1/3/0/6/130639077/130639077.html#sap+abap+interview+questions+and+answers+for+freshers+pdf+download

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000043bf.bin
279a74010d68132b01a2ad49c1c4b6d30db4e0a2a4d593ff0802526e3cea5f42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x43BF 8272 bytes

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