Malicious PDF — malware analysis report

Static analysis result for SHA-256 a673709231c2b313…

MALICIOUS

PDF

37.3 KB Authoring application: Poppler-utils
MD5: 28c530c1293f077e6c4707e2684f159d SHA-1: 1b7149ec6bb8627d4c40f9d76b13ad1da18cad02 SHA-256: a673709231c2b313de632ed6234da40412e966ee68e4782557cbb7a13be4582c
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, which is indicative of a link farm designed to direct users to external content. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports a malicious intent, likely phishing or malware distribution. The ML classifier also strongly flagged this PDF as malicious.

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://vse-kresla.com/uploads/2020/01/27/begam.pdf
    • http://wepugubuj.atelier-interior.ru/uploads/2020/01/28/748d6806418.pdf
    • http://whitnallwire.org/uploads/1/3/0/6/130604379/poguwerexodogow.pdf
    • http://krisandandreawedding.com/uploads/1/3/0/6/130621568/lesikujijese.pdf
    • http://dgias.pl/uploads/1/3/0/4/130488179/5395833.pdf
    • https://lesiwumuro.weebly.com/uploads/1/3/0/3/130323124/gapumomasulozabe.pdf
    • http://ntjyqpzxgfwzdwvg.weebly.com/uploads/1/3/0/6/130604581/tolufozapavugam.pdf
    • http://stephanierocheleauphotography.com/uploads/1/3/0/6/130621089/9111428.pdf
    • http://wit-isms.com/uploads/1/3/0/2/130291822/2915960.pdf
    • http://fazewaji.imperium.bz/uploads/2020/01/28/rigonumuzekuzesodawu.pdf
    • http://li11.icu/uploads/2020/01/27/komovalerajaga.pdf
    • http://opynestrategies.org/uploads/1/3/0/5/130539338/a427582dea9.pdf
    • http://mavor.sportsrt.com/uploads/2020/01/28/widoxapenoxupev-rodamedoj.pdf
    • https://zoxavabagabop.weebly.com/uploads/1/3/0/5/130551258/xofosabem.pdf
    • http://crossfitforteustis.com/uploads/1/3/0/3/130323227/beguxukarud_xolevewazamaw.pdf
    • http://xotiwovek.pavlin-spb.ru/uploads/2020/01/27/27a9d8.pdf
    • https://gufususetawopo.weebly.com/uploads/1/3/0/2/130270938/lizoz-mabewapafufuza-tijetuj.pdf
    • http://natuwaf.myshop18.site/uploads/2020/01/29/bunulazipanejureruju.pdf
    • https://fuvakakisu.weebly.com/uploads/1/3/0/2/130272406/ladujemalel.pdf
    • http://rembytteplo.ru/uploads/2020/01/27/redomogolixow.pdf
    • http://zomuv.angelis-spa.com/uploads/2020/01/27/8423957.pdf
    • http://connorgosell.com/uploads/1/3/0/4/130483178/5765580.pdf
    • http://michaudwellness.com/uploads/1/3/0/6/130603825/130603825.html#fibre+d%27aramide+prix
    • http://connorgosell.com/uploads/1/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001697.bin
a2c2a08b497977f6a025c2e7a5ae14d2b132bea4797147db831c10aac097e50e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1697 9044 bytes

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