Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f712d0bc90a3d43…

MALICIOUS

PDF

45.6 KB Authoring application: SWFTools
MD5: 6eb3c682b053ca65592bf6155ed10363 SHA-1: 27e18bddcea6067a6b0bbce3e8435a0f31766d90 SHA-256: 1f712d0bc90a3d431fdb229c2d0f342386135bf7ac2eb9be1adb586b0629963a
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 often used for SEO poisoning or distributing malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall' and the heuristic firing 'PDF_SEO_LINK_FARM' strongly indicate a phishing or traffic redirection scheme. The document body text, though partially corrupted, suggests a pretext of providing an 'attached completed application form' to entice users to click the embedded 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://pirupikuj.weebly.com/uploads/1/3/0/5/130588964/fipotakokud.pdf
    • http://trialgraphixs.com/uploads/1/3/0/3/130323172/3143148.pdf
    • http://jos.flabgu.com/uploads/2020/01/29/0beee2.pdf
    • http://myenvisionphotography.com/uploads/1/3/0/6/130621608/xagovej.pdf
    • http://perfectlywrappedllc.com/uploads/1/3/0/5/130550887/xuluzorula-pokapi-kifefawinizekev.pdf
    • http://deleziwupo.rcliffapp.com/uploads/2020/01/28/5870f2.pdf
    • http://movalhome.net/uploads/1/3/0/3/130323277/7610438.pdf
    • http://ncmodern.com/uploads/1/3/0/6/130605120/6986783.pdf
    • http://gomriz.com/uploads/1/3/0/4/130435888/130435888.html#please+find+attached+completed+application+form

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001216.bin
0d2a87250c2cdda4d18dcf5a9357f9ec3281b31aceffce18c3deabfe0f556461		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1216 9032 bytes

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