Malicious PDF — malware analysis report

Static analysis result for SHA-256 68679cd8a953cb24…

MALICIOUS

PDF

42.1 KB Authoring application: GIMP
MD5: a644cc81ad21545d67944720c7ce5146 SHA-1: 5f41eb5733e48fab7f65a64232288d4e5302f7ca SHA-256: 68679cd8a953cb2474530afab7340c1092095800eea478d67aeb25cd15070333
152 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to numerous PDF files hosted on various domains. This pattern is indicative of a link farm or a distribution mechanism for further malicious content. The ClamAV detection and ML classifier further support the malicious nature of this file.

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://tkplink.com/uploads/1/3/0/6/130639537/239bf6.pdf
    • http://artani360.com/uploads/1/3/0/6/130621601/bejenubov-ratekado.pdf
    • http://powerbabes.net/uploads/1/3/0/5/130544437/4e7c1545765fc01.pdf
    • http://emoryinc.com/uploads/1/3/0/3/130379231/30add9562a1.pdf
    • http://looe-festival-of-the-sea.com/uploads/1/3/0/5/130539348/vutuwu_gutojizoliz_sizob_xovefutakufozip.pdf
    • http://mrorejel.info/uploads/1/3/0/6/130620564/velefi.pdf
    • http://auctioncincy.com/uploads/1/3/0/5/130543074/nepiwo.pdf
    • http://bubblebagsaustralia.com/uploads/1/3/0/2/130291783/bawaxonof_xexumek.pdf
    • http://spindoctorspromotions.com/uploads/1/3/0/4/130435803/7821461.pdf
    • http://noahopper.com/uploads/1/3/0/5/130539046/df1192af.pdf
    • http://www.realdefumados.com.br/uploads/1/3/0/5/130588927/8f706.pdf
    • http://n122ld.com/uploads/1/3/0/6/130620154/6049468.pdf
    • http://crazyladiesdesigns.com/uploads/1/3/0/2/130289367/237308.pdf
    • http://podcastle.net/uploads/1/3/0/7/130738667/jixepufafi_bufafupuju_xejifaveki.pdf
    • http://millyproducts.com/uploads/1/3/0/5/130543979/fadewexodiwum.pdf
    • http://hostmaster.thesource.wales/uploads/1/3/0/6/130639467/9541178.pdf
    • http://sprzataniewspolnot-warszawa.pl/uploads/1/3/0/5/130542775/lujazulu-kavakerena.pdf
    • http://techlinkat.com/uploads/1/3/0/5/130540604/6610474.pdf
    • http://inspiredlivingwares.com/uploads/1/3/0/6/130604886/zidug.pdf
    • http://matthiasferber.com/uploads/1/3/0/3/130323723/1291d48d38b7.pdf
    • http://michaelwellsart.com/uploads/1/3/0/2/130288762/130288762.html#world+economic+forum+2016+fourth+industrial+revolution

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004549.bin
03c52644e1b9353c6dd7350d68405b56a4d48dde0c2918acaab6a56bb723e9fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4549 8284 bytes

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