Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4c7279d7978599f…

MALICIOUS

PDF

37.4 KB Authoring application: QPDF
MD5: 585ea235f51e4f72bae1fda1642bdd3a SHA-1: 026325cf224f70791b3c1d6dad7ab39bd3d7f14d SHA-256: c4c7279d7978599f4e0108283728deddd8477b7fb6709414fff77bf4b3704316
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF file contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic, suggesting an attempt to manipulate search engine results or redirect users to malicious content. The presence of a visual download button further supports a lure-based attack. ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' confirms the malicious nature. The embedded URLs likely serve as the initial redirection points for the attack.

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://teizang.us/uploads/1/3/0/4/130435684/4018312.pdf
    • http://angieballoons.com/uploads/1/3/0/5/130588942/6d9183ce25.pdf
    • http://goals-fitness.com/uploads/1/3/0/3/130313193/8197841.pdf
    • http://myforgottenself.com/uploads/1/3/0/6/130621093/37ea4a1914.pdf
    • http://newyorksocialpages.com/uploads/1/3/0/6/130604341/ee9476a0.pdf
    • http://annabelchiarelli.org/uploads/1/3/0/6/130621098/ea8c5c8255649f.pdf
    • http://teamborkowski.com/uploads/1/3/0/5/130550812/bab32e9fcfd.pdf
    • http://woozeyacresllc.com/uploads/1/3/0/3/130379289/mikijelu-xoxepiguwesaw-bomesaju.pdf
    • http://cathyhepworth.com/uploads/1/3/0/6/130621458/1547541.pdf
    • http://brotherhoodofthegame.com/uploads/1/3/0/5/130539837/ponowes.pdf
    • http://www.carrybackkings.com/uploads/1/3/0/6/130620659/70a73edf9c3f33a.pdf
    • http://adventuresbyprice.com/uploads/1/3/0/6/130639911/130639911.html#app+to+edit+pdf+in+ibooks

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e03.bin
e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2E03 2652 bytes
font_01_sfnt_off000039fe.bin
a3098ec110f1bb3a32e8e8a9fbefcafefb907e57608f577e9af4b78360b2420c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x39FE 8332 bytes

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