Malicious PDF — malware analysis report

Static analysis result for SHA-256 1534dd9589ec70cf…

MALICIOUS

PDF

38.4 KB Authoring application: Poppler-utils
MD5: 4e05dfd83d73d73c49ee2f51a50901b9 SHA-1: 3e4ec0276df6bc87df6d9488d79c62b215e7400c SHA-256: 1534dd9589ec70cfdad984da8963d65720a85dbc2d539e829745f5a893a4fc49
192 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, indicative of a link farm designed to redirect users to malicious content, as flagged by the PDF_SEO_LINK_FARM heuristic. The document's content and heuristics strongly suggest an advance-fee scam lure, aiming to trick users into clicking these links. The ClamAV detection and ML classifier further confirm its malicious nature.

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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://gatewayevents.co/uploads/1/3/0/5/130590235/mutebalas.pdf
    • http://missionarytest.com/uploads/1/3/0/5/130550732/wivuzazekopurekupudo.pdf
    • http://antiguarentalhouse.com/uploads/1/3/0/6/130621310/6312711.pdf
    • http://newsolutionsit.com/uploads/1/3/0/3/130379141/85332ebae1a8.pdf
    • http://dalecullis.com/uploads/1/3/0/6/130620836/tafazejibadof_wefada.pdf
    • http://mx.kcminiaturestudio.com/uploads/1/3/0/4/130483741/542522.pdf
    • http://healthsolutionscr.net/uploads/1/3/0/4/130489230/semajapuruw_zudazuvigibapew_kupuvu_xidoluk.pdf
    • http://proaccessinc.com/uploads/1/3/0/5/130547078/dozot.pdf
    • http://batteryconservancy.org/uploads/1/3/0/6/130605203/muladoxi_dofozoxasojemom_zinowisaxox_digalozufiwu.pdf
    • http://shop.loganchasesink.com/uploads/1/3/0/4/130435581/1725304.pdf
    • http://www.3minspection.net/uploads/1/3/0/4/130483041/1b3911.pdf
    • http://vanatotzstudio.nl/uploads/1/3/0/8/130814676/6424132.pdf
    • http://gsfx.org/uploads/1/3/0/6/130621916/6c017.pdf
    • http://webdisk.tape23.com/uploads/1/3/0/4/130435712/kelenavonen.pdf
    • http://liduoguojiyulehuisuo.br3h.com/uploads/1/3/0/7/130776250/130776250.html#java+programming+questions+on+classes+and+objects+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003bc4.bin
17a10a6ec2e7bbf0d9efafde16e59827737b9240a9ff244e4033aca012360522		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3BC4 8128 bytes

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