Malicious PDF — malware analysis report

Static analysis result for SHA-256 9be1c3a35c076cdc…

MALICIOUS

PDF

42.7 KB Authoring application: OpenOffice Draw
MD5: 73b03ee280a0160c6ef537dd5d2e3715 SHA-1: b360ec97810c8bed369805847dd900c9b47eb86d SHA-256: 9be1c3a35c076cdc0e3b06b758f4df54e528c4274ace8fa9d74e139ecba67a11
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection also flags this as a phishing attempt. The document body, though heavily corrupted, contains a subset of these URLs, reinforcing the link-farming behavior. The primary intent appears to be directing users to a network of linked PDF files hosted on various domains.

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://mercy-reigns.com/uploads/1/3/0/2/130273987/nuleruk-lutafifom-koravirubur-lejiwe.pdf
    • http://lutomuruka.flowers38.ru/uploads/2020/01/27/tukipejoju_bofovud.pdf
    • http://unblockedgame500.weebly.com/uploads/1/3/0/5/130543545/rakun-wupaxid.pdf
    • http://uvproclean.com/uploads/1/3/0/3/130379126/pokifemojabi_siwepa.pdf
    • http://myrabi.com/uploads/1/3/0/2/130289800/cefd6cf051.pdf
    • http://bilper.pt/uploads/1/3/0/5/130550774/lezubevo.pdf
    • http://nemozudona.jnbusiness.services/uploads/2020/01/27/luzixevodum.pdf
    • http://aispng.org/uploads/1/3/0/5/130539757/nuzejinotulex.pdf
    • http://the-how-failure-changed-me.com/uploads/1/3/0/2/130291434/4533568.pdf
    • http://barbersplus.com/uploads/1/3/0/6/130603968/6066672.pdf
    • http://milad.top-shop21.ru/uploads/2020/01/28/6093921.pdf
    • http://mrjmusic.org/uploads/1/3/0/5/130589431/8279803.pdf
    • http://zambiasafarihunting.com/uploads/1/3/0/5/130588936/130588936.html#aurangzeb+movie++moviescounter

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012fa.bin
a3c56a405d156700e9cd2676b306ee33508860f0d61fd4e35b0335b2ba025d88		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12FA 8168 bytes
font_01_sfnt_off00005fc3.bin
86522259f93c33d6556c786d9461c37ecaaa62b0ed1de9e163fc671bc4851ea8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC3 8076 bytes

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