Malicious PDF — malware analysis report

Static analysis result for SHA-256 013755ae242418bc…

MALICIOUS

PDF

41.0 KB Authoring application: Poppler-utils
MD5: 514c25bee22f1510096dd33f7f1b931b SHA-1: 61afcdcff5d5426fae556435aa4175f78bc7508e SHA-256: 013755ae242418bc4460047dc55cabd2c58bca6f566fe45a9b50f63ea7ce10f2
192 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic, suggesting a malicious intent to redirect users to potentially harmful content. The ML classifier and ClamAV detection strongly indicate maliciousness. The embedded URLs are likely part of a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://tetiana.net/uploads/1/3/0/2/130273913/xavumijaz.pdf
    • http://los.retinuelk.org/uploads/2020/01/27/d08a33148.pdf
    • http://bergeneducational.com/uploads/1/3/0/6/130622080/sukegarilugosekof.pdf
    • http://audiostart22.icu/uploads/2020/01/28/2292047.pdf
    • http://nutritionniste-nantes.fr/uploads/1/3/0/6/130639275/wibolegedes.pdf
    • http://aimonpurpose.com/uploads/1/3/0/4/130435652/tigupepozegewiw.pdf
    • http://missiescompletebeverageandbartendingservice.com/uploads/1/3/0/6/130639904/lifim.pdf
    • http://petradesigns.net/uploads/1/3/0/5/130545882/neseli.pdf
    • http://onecityhistoricalfoundation.com/uploads/1/3/0/2/130289692/9875c14f2927d79.pdf
    • http://readthinkwritespeak.com/uploads/1/3/0/6/130620998/wosuguwetolad_losakabonenose.pdf
    • https://zodasagexuxi.weebly.com/uploads/1/3/0/4/130483260/3491128.pdf
    • http://canberraveterinarycrisisfund.com/uploads/1/3/0/6/130639227/pedevosijotubazil.pdf
    • http://codfishhill.com/uploads/1/3/0/4/130488087/41aeb7dc.pdf
    • http://panado.freeknightcash.com/uploads/2020/01/27/darewapowifulil_vatulip_vegekisufep_lebokifijev.pdf
    • http://coachrenee2u.com/uploads/1/3/0/5/130541765/7cfbf803b19b.pdf
    • http://totalhealthandhomewellness.com/uploads/1/3/0/4/130492229/c4d8d965.pdf
    • http://acrpafrica.com/uploads/1/3/0/6/130640024/wewusutivebema.pdf
    • http://rossconcretemasonry.com/uploads/1/3/0/5/130588442/0d01b0a89683c.pdf
    • http://dgmobilehorseboxrepair.co.uk/uploads/1/3/0/6/130621045/2475805.pdf
    • http://thebalancedrecipe.com/uploads/1/3/0/4/130435601/demizinuj.pdf
    • http://num.mariaflights.com/uploads/2020/01/28/dodokugezewu.pdf
    • http://policetrailer.com/uploads/1/3/0/5/130588216/130588216.html#printable+durable+power+of+attorney+form+missouri

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001670.bin
6279b0682a3cd0a04f5f381d929c35b7714a3711f6621850f775f28948b6cd8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1670 7668 bytes

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