Malicious PDF — malware analysis report

Static analysis result for SHA-256 2990556cf26f655e…

MALICIOUS

PDF

59.2 KB Authoring application: Nitro PDF
MD5: 642405952f86277dd8d85c4169dc5feb SHA-1: 6e56b0b16f3f53a3b0df5395060e4e8745216f7a SHA-256: 2990556cf26f655e7a444b0a45f283f24da65429006e46a12a8641b2c1a76355
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to other PDF files hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or traffic-generating intent. No scripts were extracted from this sample, and the document body was heavily obfuscated and truncated.

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://groupejobinassurances.ca/uploads/1/3/0/4/130476248/zimog-rezotaza.pdf
    • http://senioreducationresource.com/uploads/1/3/0/7/130738596/4545622.pdf
    • http://raechild.net/uploads/1/3/0/4/130435598/gosafinexara-zevozugawas.pdf
    • http://www.adonaisgoldendoodles.com/uploads/1/3/0/4/130435680/65caaf5d9b.pdf
    • http://bellaesana-berlin.de/uploads/1/3/0/4/130488851/fapidew.pdf
    • http://www.tagustimes.com/uploads/1/3/0/6/130605204/4047274.pdf
    • http://mwmbg.org/uploads/1/3/0/6/130639613/8872004.pdf
    • http://www.singaporeangranturismo.com/uploads/1/3/0/5/130588515/7c38342.pdf
    • http://zikabrazil.com/uploads/1/3/0/6/130604294/jominagokupomib_petavigo.pdf
    • http://chrislockett.com/uploads/1/3/0/6/130621043/3bac391fe6bd52.pdf
    • http://www.coachncharizma.net/uploads/1/3/0/2/130289322/bajojelu.pdf
    • http://simone.xsideas.com/uploads/1/3/0/6/130604517/130604517.html#daedalus+and+icarus+characters+slideshare

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006860.bin
b8a959d49b453cefe691e0c3ad494fc4783775f1efb31f25c775eb91e698273d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6860 4556 bytes
font_01_sfnt_off00007611.bin
268a4ab2aa7e418a72dbefe44687b8b3f7244b72c9a975c79b33414ab4d9d3f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7611 16392 bytes
font_02_sfnt_off00008f39.bin
5a5e4e89e825def4c216fb87c47e011a5aca2f633954d20886742868755f3bc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F39 9348 bytes

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