Malicious PDF — malware analysis report

Static analysis result for SHA-256 b846e16971ee2fba…

MALICIOUS

PDF

70.3 KB Authoring application: Mobipocket Creator
MD5: 188b3549836a33469047a78423edb767 SHA-1: 5c3bcbaba618349b2b80898a19bee9622bc7bb67 SHA-256: b846e16971ee2fbaeb554057f54e3000dcbebe1e9c15e0ff2d804a68d9dd45e7
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF file contains a large number of embedded links to other PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' strongly suggests a phishing or traffic redirection campaign. The presence of a 'download button' heuristic further supports the lure-based attack pattern. No scripts were extracted, but the link farm and phishing detection are sufficient indicators.

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://collegeauditionsupport.com/uploads/1/3/0/6/130639327/7d337131b8.pdf
    • http://gurap.trends2019.shop/uploads/2020/01/28/kodusula.pdf
    • http://bouvardtavern.com/uploads/1/3/0/5/130588412/86459a0731bbc.pdf
    • http://casadeshenandoah.com/uploads/1/3/0/3/130379205/kijasipikudebad.pdf
    • http://ajhollowayministries.com/uploads/1/3/0/2/130270924/jenoxaxa.pdf
    • http://xem.kiamotors.md/uploads/2020/01/28/govufaziwefufekapa.pdf
    • http://movetoamendpdx.org/uploads/1/3/0/4/130493968/zubomudun-muzukefajobule.pdf
    • http://misssupremepurityqueen.com/uploads/1/3/0/4/130483819/130483819.html#ctet+answer+key+9+dec+2018+pdf

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000132c.bin
f7b159b9e4b92935d4cb2e8661b240fa47be8631228a3921601ace2e917ea4be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x132C 8504 bytes
font_01_sfnt_off0000a90f.bin
1723f1ced37cc89d69e30f3df6281c5e5fb8989544fd4587aa75b00c91af2fd0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA90F 1388 bytes
font_02_sfnt_off0000b3bc.bin
d1a1811982a2fc1c9346ee6a7eefe7665bd30f3a6c4d0037b79e8cfca3041274		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB3BC 18352 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.