Malicious PDF — malware analysis report

Static analysis result for SHA-256 2199bd3fa93d01e0…

MALICIOUS

PDF

39.6 KB Authoring application: QPDF
MD5: 430f0f43d291139632cff84073fbc684 SHA-1: fa47fb3cce1a84da4d70cb65f682eb01c3f015ba SHA-256: 2199bd3fa93d01e0cbb61fbf76b84be3e80ac3f86276bdfb0ba823e75cd69562
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, a technique often used for SEO manipulation or to distribute malicious payloads. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or malicious distribution intent. The document body is heavily obfuscated and does not provide clear user-facing text, but the heuristic firings strongly indicate a malicious link farm.

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.milankarol.me/uploads/1/3/0/3/130323647/baved_kozin.pdf
    • http://simakova-yulia.com/uploads/1/3/0/7/130775352/3273750.pdf
    • http://www.viralrevival.se/uploads/1/3/0/9/130969506/barule.pdf
    • http://blhkr.com/uploads/1/3/0/7/130775751/3e06d90e2455.pdf
    • http://www.alethiacarestruly.com/uploads/1/3/0/6/130639786/rukibofotif_tukonujuso_ruvup_kijigamoxegilu.pdf
    • http://www.pof-freeaddcalls.com/uploads/1/3/0/7/130739238/4076832.pdf
    • http://www.littypartyinabox.com/uploads/1/3/0/6/130605097/7be7571.pdf
    • http://warehousesixmusic.com/uploads/1/3/0/2/130289198/kimovudusozil_fusuxas_saromixi_zokapafaxepireg.pdf
    • http://www.inannasmoon.com/uploads/1/3/0/6/130620626/1ad50ae8f2f0e5c.pdf
    • http://threadlineworldwide.com/uploads/1/3/0/6/130639114/silivefunadivim-raxofip-taboxozigiv.pdf
    • http://lenke-nauck.com/uploads/1/3/0/2/130288406/4627555.pdf
    • http://www.j9roman.com/uploads/1/3/0/3/130313173/5658116.pdf
    • http://www.joshschoonmaker.com/uploads/1/3/0/7/130775830/1155198.pdf
    • http://minitechmachinery.com/uploads/1/3/0/5/130551144/kaxulavesaroxad.pdf
    • http://www.autotechnotes.com/uploads/1/3/0/6/130621732/mototapamimejanal.pdf
    • http://michaelshusko.com/uploads/1/3/0/6/130605521/130605521.html#black+sabbath+paranoid+traduzione+testo+in+italiano
    • http://www.j9roman.com/uploads/1/3/0/3/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003297.bin
84340d81b687e5658134e86d602934373e4edb1358290f916b35b324124d256a
pdf-font-stream PDF embedded font (sfnt) at offset 0x3297 2696 bytes
font_01_sfnt_off00003f05.bin
a65f90b405acc6fb69ec72ee7d8a3e0fd71e498cd4ce819d1524f6cf68aedf59
pdf-font-stream PDF embedded font (sfnt) at offset 0x3F05 8824 bytes