Malicious PDF — malware analysis report

Static analysis result for SHA-256 52391e57898573b3…

MALICIOUS

PDF

71.9 KB Authoring application: Mobipocket Creator
MD5: 32e6db9369c52c46089d8eb721d69f59 SHA-1: 3a52f3fe5911ef6d54e6a3f807a5f727beda3292 SHA-256: 52391e57898573b3a2b6aa060af184b083076ede1c568d2ea81a37d0ceb1f2a0
150 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.TtraffRobotInstall-7605656-0 and a machine learning classifier. The critical heuristic PDF_SEO_LINK_FARM indicates the presence of a large number of external links, with the primary domain being myfiestaofeight.com. These links are likely used to redirect users to malicious sites, consistent with phishing or malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://myfiestaofeight.com/uploads/1/3/0/2/130274154/eb6bad5e90.pdf
    • http://mytayloralexander.com/uploads/1/3/0/6/130621664/rupufivebatupu.pdf
    • http://jafafoka.art-bordur.com/uploads/2020/01/27/9741850.pdf
    • http://gialamais.com/uploads/2020/01/27/856187.pdf
    • http://thecodefitness.org/uploads/1/3/0/6/130605030/f1dd8e6e9f19.pdf
    • http://lunoge.vipiska-egrn-besplatno.icu/uploads/2020/01/28/2ea6d7c2aad.pdf
    • http://reroloraso.flewka.ru/uploads/2020/01/28/8812962.pdf
    • http://sosi.handselected.life/uploads/2020/01/28/54fc11.pdf
    • https://xuvezekezok.weebly.com/uploads/1/3/0/2/130289773/mosujikipa.pdf
    • http://eastendtrx.com/uploads/1/3/0/4/130476346/zegupaw.pdf
    • http://eetiklekkerwel.nl/uploads/1/3/0/5/130551258/vufuv_salurodile_jiwupikoxiwuze.pdf
    • http://valutazioni-gioielli.com/uploads/1/3/0/5/130544448/vopuz-vimubunevabaxi.pdf
    • http://daz.lux-scent.ru/uploads/2020/01/27/piwunujolelexi_zojusujotemozol.pdf
    • http://pickleball-germany.net/uploads/1/3/0/4/130483866/mesevugozivufo.pdf
    • http://lilyhockcreations.com/uploads/1/3/0/6/130605159/e04a169c.pdf
    • http://naramataplayschool.com/uploads/1/3/0/6/130604285/988659.pdf
    • http://stokesed508webpage.com/uploads/1/3/0/6/130621475/130621475.html#chafe+verb+forms

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001518.bin
f98e8d17185b1ff107dd5abaccc2cfbadfd2f60fc44712d6525e3e09c7a1a659		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1518 7976 bytes
font_01_sfnt_off00006300.bin
a7b5e5584d287321f51153f72a5b90e868a5a10cf784e505237a245b9968bbc2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6300 16116 bytes

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