Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a695d180e19f831…

MALICIOUS

PDF

38.9 KB Authoring application: Poppler-utils
MD5: 316bfe90e80d7ba78f819959585ecc90 SHA-1: b82c68788681f5daa17366057bac660dba849955 SHA-256: 6a695d180e19f8311f5dfab923b942f9af670a1039f6c6788f7f6879e6dbc947
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to other PDF files hosted on various domains. This behavior is indicative of a link farm or a mechanism to distribute further malicious content or manipulate search engine results. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to 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://dporfebre.com/uploads/1/3/0/6/130639558/pegamuzatimova-zulewek.pdf
    • http://philanimalrescue.org/uploads/1/3/0/3/130313140/luvuwute_jesonowanose.pdf
    • http://mundofeliz.es/uploads/1/3/0/5/130589435/gopef-kativujiwitap-dufuwopapepe-juravorevonej.pdf
    • http://ourvillagefarmacy.com/uploads/1/3/0/4/130476442/c407a5b2.pdf
    • http://ianburnley-studio.net/uploads/1/3/0/5/130551754/3958e13abc1f1.pdf
    • http://jigevir.aromastyle.biz/uploads/2020/01/28/wipizutuvizimusogi.pdf
    • http://questionata.net/uploads/1/3/0/3/130313613/fadujamazor_mojapana.pdf
    • http://mycusina.com/uploads/1/3/0/5/130543816/fuzevananoremukox.pdf
    • http://chrissynoelkinslow.org/uploads/1/3/0/6/130620857/7973900.pdf
    • http://skyviewbands.weebly.com/uploads/1/3/0/6/130621969/7900680.pdf
    • http://cubeexchange.com/uploads/1/3/0/4/130476598/likejizuwilumet.pdf
    • http://thlglobal.net/uploads/1/3/0/2/130273753/5432350.pdf
    • http://michaudwellness.com/uploads/1/3/0/6/130639307/130639307.html#alcohol+withdrawal+syndrome+medication+over+the+counter

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001368.bin
0569caadd314b8ae30cc5e5e3a2b15687dbc6bb0f173057905a56d609c61014d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1368 7852 bytes

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