Malicious PDF — malware analysis report

Static analysis result for SHA-256 4120672be68f4b6a…

MALICIOUS

PDF

45.4 KB Authoring application: Mobipocket Creator
MD5: 5ed9330f3f8e9b92a11c93e721995d74 SHA-1: c85541e2434817d00d84e266e33a22e4ad528c55 SHA-256: 4120672be68f4b6adee7c84ace723644a19bdfd32915a008f57fa48ab54e05dd
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic. The document body mentions 'Motivation letter for job word', suggesting a lure to disguise the malicious intent. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or traffic redirection purpose. No scripts were extracted from this sample.

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://myacrepairorlando.com/uploads/1/3/0/2/130270900/4768424.pdf
    • http://2ndgencamaroparts.com/uploads/1/3/0/5/130590677/zawidebivig_tinomuwigis_sifosodifiwalo_sajoxipesane.pdf
    • http://asbpw.com/uploads/1/3/0/2/130287401/88556.pdf
    • http://gayejee.com/uploads/1/3/0/6/130620677/gatupizabupopumedu.pdf
    • http://stadtentdecker-in.de/uploads/1/3/0/6/130639438/8942147.pdf
    • http://second-childhood.com/uploads/1/3/0/3/130313213/vuwufuvividadevekore.pdf
    • http://brickfilmarchive.weebly.com/uploads/1/3/0/6/130605254/vovekabigivul.pdf
    • http://snobz.co/uploads/1/3/0/6/130605073/8398320.pdf
    • http://deardoc.org/uploads/1/3/0/7/130776740/130776740.html#motivation+letter+for+job+word

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011ee.bin
a534406779c357ab1679ed7b2849817e95d9cd7f68425bd44ace15bab12d4d9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11EE 8620 bytes

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