Malicious PDF — malware analysis report

Static analysis result for SHA-256 0191b787626efb2d…

MALICIOUS

PDF

37.5 KB Authoring application: Pdftk
MD5: a945cd78b6ff57b181852fad4dedfa82 SHA-1: 1a275f91bc8c8ec2347e6e86a5757ef22ad995f4 SHA-256: 0191b787626efb2d4ee5067983995047669bc041def31f0a4f6969292329b64f
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF document contains a large number of embedded URLs pointing to other PDF files hosted on various domains. This technique is often used for SEO poisoning or to distribute malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution via these linked PDFs.

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://lune-blanc.com/uploads/1/3/0/4/130489090/geletosiruk_wojaw.pdf
    • http://elevateinsightla.com/uploads/1/3/0/2/130288751/vofabewu_nixarizoka.pdf
    • http://chaletalpemassif.com/uploads/1/3/0/4/130483928/2c77955f51a64a.pdf
    • http://poroz.tanfoto.ru/uploads/2020/01/28/buguminofuduv_datiz_wosivopifij_sufipojiramewo.pdf
    • http://kurdistantours.net/uploads/1/3/0/4/130488172/sejiwi_libeku_luvuve_mevubizo.pdf
    • http://coastnuflow.com.au/uploads/1/3/0/5/130538842/6565751.pdf
    • http://conquerormindfulness.com/uploads/1/3/0/4/130491179/gebilisimoku_vewuxufo.pdf
    • http://aakyoga.com/uploads/1/3/0/2/130289655/rifabagemilapuw.pdf
    • http://nataliadgrafica.com/uploads/1/3/0/2/130272101/cee5cd2219a91.pdf
    • http://office-supp.com/uploads/1/3/0/6/130603927/85606e497c7082.pdf
    • http://princetonfamilywellness.com/uploads/1/3/0/6/130604434/3600975.pdf
    • http://rhsimb.org/uploads/1/3/0/6/130621952/vezulenamivi-tokurip-renak.pdf
    • http://bsa-sccc-pack301.com/uploads/1/3/0/6/130620970/130620970.html#corner+gas+actress+killed+herself

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000134c.bin
cdc06f459e2d7a7d7b6204ba10ef6320c5236b2fc7cb0030c59d316467446617		 pdf-font-stream PDF embedded font (sfnt) at offset 0x134C 7816 bytes

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