Malicious PDF — malware analysis report

Static analysis result for SHA-256 2516b58d23537946…

MALICIOUS

PDF

40.7 KB Authoring application: GIMP
MD5: 583275941f0e3cfdc086e22cb84cf5e4 SHA-1: 964bf5807bbe28aad75da53373e67d18998a77b4 SHA-256: 2516b58d23537946191d5f718c5c5b8a4e467d2945e7251d2f61924e89ad8c51
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to other PDF files, a technique commonly used for SEO poisoning or to distribute malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or traffic redirection intent. The document body, though partially corrupted, mentions 'how do you use an oxy acetylene cutting torch', which appears to be a lure to disguise the malicious nature of the links.

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 https://gofotegivepevo.weebly.com/uploads/1/3/0/5/130551375/rezasusedebufe_ziwez.pdf
    • http://mschris.net/uploads/1/3/0/6/130639498/dovavigo_fukujazowopedim.pdf
    • http://advancedbrewingsystems.com/uploads/1/3/0/4/130477448/gexomenofutofud-rabeforefum.pdf
    • http://myhypecheck.com/uploads/1/3/0/5/130538995/cf26da5b0198e.pdf
    • http://positivepushkc.com/uploads/1/3/0/5/130588686/71aae40b1d1fd.pdf
    • http://artistjacquespepin.com/uploads/1/3/0/5/130589168/292969.pdf
    • http://studio-ocd.com/uploads/1/3/0/8/130813453/pevafibufulata.pdf
    • http://nirvanatails.net/uploads/1/3/0/5/130551267/fulugikutiso_zikimesam_kefek.pdf
    • http://edwardfanphotos.com/uploads/1/3/0/5/130588847/2495871.pdf
    • http://a1412531xstreamtravel.xsideas.com/uploads/1/3/0/7/130775261/130775261.html#how+do+you+use+an+oxy+acetylene+cutting+torch

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001298.bin
09dd8740663b287ffe6649c86f86d8b5a1ecbdee3378e1b28e96bda1673cc99e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1298 8268 bytes
font_01_sfnt_off00006355.bin
8ec8c2252d1b0a1cc16637c0e1f77da7137146423e231c53be47bbaf832064ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6355 2048 bytes

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