Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fd6fe7c2b15e47c…

MALICIOUS

PDF

42.1 KB Authoring application: OpenOffice.org
MD5: 2d9c953c57252d1f4f15a680dc76ecfb SHA-1: 753240e582ae8d4e9244f8c67a8e774e0110d21b SHA-256: 1fd6fe7c2b15e47ce5f8c95f8387595ca364f1a1975225386896b9e0dc595043
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 manipulation or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body itself is heavily obfuscated and does not provide clear user-facing text, but the presence of numerous external links is the primary indicator of the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://ministerioslagloriaestuyajesus.org/uploads/1/3/0/6/130639827/xupowigawapo.pdf
    • http://citizen-agency.com/uploads/1/3/0/6/130604422/xakaf_purevixu_demomasidegigu.pdf
    • http://miupnorthwedding.com/uploads/1/3/0/7/130738784/8644222.pdf
    • http://xrdsfaith.com/uploads/1/3/0/6/130620313/zufaxu-votusebi-lovisanes-sidosefar.pdf
    • https://fipumafes.weebly.com/uploads/1/3/0/5/130543840/xasuzefixenu_mowew_bekoziregoxu.pdf
    • http://reneegdesigns.com/uploads/1/3/0/6/130621031/d688670c313.pdf
    • http://westboro-apts.ca/uploads/1/3/0/6/130620579/toduzegebokewa_doxaluzuvulek.pdf
    • http://rentalsandroommates.net/uploads/1/3/0/5/130538992/xawixotituges.pdf
    • https://nolobosun.weebly.com/uploads/1/3/0/5/130589131/beteneruw-tejofemikifiz-tegedonakag.pdf
    • http://bolivarsynergy.com/uploads/1/3/0/6/130604844/f06af671bf.pdf
    • http://nexgentest.com/uploads/1/3/0/7/130738714/raragusepigunob.pdf
    • http://drpatty.net/uploads/1/3/0/5/130590296/130590296.html#jealous+guy+john+lennon+piano+sheet+music

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000013ab.bin
6182b8dbff5076956d224c4913ed74bda669c578bbd3414330c1adb616a7281b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13AB 9392 bytes
font_01_sfnt_off00005237.bin
e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5237 2652 bytes
font_02_sfnt_off00005b32.bin
323a1c253d47b5173e3c4e9f4c688d674b10160f2bd6b32d7cb5a5fe97e695ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B32 16768 bytes

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