Malicious PDF — malware analysis report

Static analysis result for SHA-256 a24c36e63590eb63…

MALICIOUS

PDF

34.5 KB Authoring application: ImageMagick
MD5: 46175868eb5befed6bdcea37af05b8a4 SHA-1: 05f0b921b9373513fb90f99d6206c448ee3c5940 SHA-256: a24c36e63590eb63c3c0ab1ab4dbb0b36fa8de11d7aab868a209c073ae998927
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF documents, as indicated by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection further confirms its malicious nature. The document body, though heavily obfuscated, contains URLs that are consistent with the link farm heuristic. The primary attack pattern appears to be SEO spam or a phishing lure, directing users to a multitude of potentially malicious or unwanted content 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://millennial-media.net/uploads/1/3/0/4/130488983/2e00656e94e98.pdf
    • http://man-energy.ru/uploads/2020/01/27/5955596.pdf
    • http://lessons-by-alex.com/uploads/1/3/0/4/130476751/sazulig.pdf
    • http://rosehillnow.com/uploads/1/3/0/2/130273623/3958605.pdf
    • http://a-gward.com/uploads/2020/01/28/wisix_fodinepubuwiki_meniguzetu.pdf
    • http://vexu.kewa.fun/uploads/2020/01/27/6702245.pdf
    • http://learnwithfrank.com/uploads/1/3/0/5/130539319/xoxiw.pdf
    • https://laweneruzunoba.weebly.com/uploads/1/3/0/2/130289793/7869350.pdf
    • http://goodshop04.fun/uploads/2020/01/27/4962141.pdf
    • https://zonimesufaki.weebly.com/uploads/1/3/0/5/130538833/rijumux.pdf
    • http://maelabellydance.net/uploads/1/3/0/2/130272442/buvejaduxunavomo.pdf
    • http://relibali.comparewith.net/uploads/2020/01/28/riroritofo_vegizit_pabefa_rededigu.pdf
    • http://sasepawip.candidaturaomarmolina.com/uploads/2020/01/27/wuwavawotini-sovagofi-kugivo-kevawaredeg.pdf
    • http://frostsurveyors.com/uploads/1/3/0/5/130588282/xiwedexaxus.pdf
    • https://dijepifun.weebly.com/uploads/1/3/0/2/130289789/fizad-fojebogiwun-rofupogagezofe.pdf
    • http://venenodeescorpion.com/uploads/1/3/0/5/130588811/bopilul-rekonati.pdf
    • http://caminodesantidadsf.com/uploads/1/3/0/6/130604202/4965476.pdf
    • http://swissinnovationchallenge.com/uploads/1/3/0/6/130604486/pazafiboxod.pdf
    • http://fuf.housemarkt.ru/uploads/2020/01/27/tivipubakapud.pdf
    • http://thehealthtrip.com/uploads/1/3/0/4/130493248/xegavarune-najuduminogirug-guzejesaxi.pdf
    • http://kepler-associates.com/uploads/1/3/0/3/130324206/130324206.html#hunie+pop+porn

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000015ba.bin
167daa9c028227dec17336b19f4e09c2b7974fe675becbd3a72846b18597d773		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15BA 8052 bytes

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