Malicious PDF — malware analysis report

Static analysis result for SHA-256 7791df27714b7769…

MALICIOUS

PDF

46.4 KB Authoring application: LibreOffice
MD5: 0edcbedc8ff54c4a4b2c45105b903cce SHA-1: c1e7eb7decb802cabe09e9aff85e8020266d7d18 SHA-256: 7791df27714b77699200dd87b99ead38c3efb7233d5b41b7709f4c03376fbf57
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a tactic to manipulate search engine results or distribute malicious content. The ClamAV detection and ML classifier further confirm its malicious nature, classifying it as phishing or a traffic robot installer. No scripts were extracted, and the document body content was heavily obfuscated and truncated, preventing a deeper analysis of its specific lure.

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://potsandpets.com/uploads/1/3/0/4/130483338/sajixusuz.pdf
    • http://surfsideplayhouse.org/uploads/1/3/0/6/130639059/vipugizor.pdf
    • http://davidlaffargolf.com/uploads/1/3/0/6/130604977/54c7d80.pdf
    • http://mrserickagraham.org/uploads/1/3/0/5/130588686/gajupirizuwumo_xudobetobidewez_vixamivizerokom_webiwegikipamaz.pdf
    • http://www.jenmansupport.com.au/uploads/1/3/0/2/130287503/3259270.pdf
    • http://genesisofrevelation.com/uploads/1/3/0/5/130588281/mebepow-reraregini-rajubetolebu-xazabowejakoga.pdf
    • http://hostmaster.sandbank-holidays.co.uk/uploads/1/3/0/5/130540286/4426387.pdf
    • http://bbb4kidz.com/uploads/1/3/0/5/130538959/luroro_zaxivaw_wadoxizosiv.pdf
    • http://www.ingridbogaert.com/uploads/1/3/0/5/130540874/1f00f.pdf
    • http://isaglobal.org/uploads/1/3/0/7/130775692/2701597.pdf
    • http://1stchoicevoice.com/uploads/1/3/0/8/130814007/livukomod.pdf
    • http://www.nashvilletotalimage.com/uploads/1/3/0/6/130621337/8103782.pdf
    • http://dev.propertopper.com/uploads/1/3/0/6/130621436/646621.pdf
    • http://toothfairies.biz/uploads/1/3/0/5/130551720/dizasagolevo_samorifavufita.pdf
    • http://www.lycmuebles.com/uploads/1/3/0/4/130489410/nasosufafiro.pdf
    • http://jingcaijiangjin.br3h.com/uploads/1/3/0/7/130739290/130739290.html#typhoid+ulcer+pathology+ppt

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000423d.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x423D 16036 bytes
font_01_sfnt_off00005983.bin
1cc1fcd13b0ad83ae453e82c5c0bec2205302eec438226dcbb3583d20715351e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5983 8324 bytes

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