Malicious PDF — malware analysis report

Static analysis result for SHA-256 babc4d02e6de85f8…

MALICIOUS

PDF

38.6 KB Authoring application: Poppler-utils
MD5: c276e3dcc4e120d38519527623be94f6 SHA-1: bb4c089e30567dfd6b616c1035098109260bb111 SHA-256: babc4d02e6de85f816d927b9dad8c6098dff32b970c25cca05b0463fa9b23eed
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO spam or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The primary attack pattern involves directing users to a link farm, likely to host further malicious payloads or phishing pages.

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://chilepeppersssi.com/uploads/1/3/0/7/130739729/93e50e74ec8dd7.pdf
    • http://35andunder.com/uploads/1/3/0/8/130813496/rezarivaju.pdf
    • http://binarysv.com/uploads/1/3/0/6/130640022/a435de.pdf
    • http://caroldickeyphotography.com/uploads/1/3/0/5/130540767/vimajomowigete_tatatepuwek_gaxibikujar_sumesiw.pdf
    • http://dawnlindsayviolin.com/uploads/1/3/0/6/130621896/zavobibakemaxa.pdf
    • http://ravengroupsf.com/uploads/1/3/0/5/130544190/8367902.pdf
    • http://hostmaster.janetnuttallceramics.co.uk/uploads/1/3/0/6/130639423/bivudikokitu.pdf
    • http://dimet.asia/uploads/1/3/0/6/130604693/8857783.pdf
    • http://mobilityfamily.com/uploads/1/3/0/7/130738940/4673746.pdf
    • http://alicetxchamber.org/uploads/1/3/0/2/130271081/3986f1bbeae2ed5.pdf
    • http://www.buywoofandbrew.com/uploads/1/3/0/7/130738825/neveteburud-povofe.pdf
    • http://4lifehealthwealth.com/uploads/1/3/0/7/130776105/7665a22a7c4d53.pdf
    • http://webmail.t2troubleshooting.com/uploads/1/3/0/8/130874521/130874521.html#argumentative+article+example+pdf
    • http://weeblyssl65.dss.ucdavis.edu/uploads/1/3/0/7/130738786/92bc4e2a4.pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000403c.bin
86019d86e300f76f2bbc4b5a6050ccc5b7c4e7dd987e6da84761e83f29e4758f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x403C 7216 bytes

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