Malicious PDF — malware analysis report

Static analysis result for SHA-256 96f03fdca1f6fc3a…

MALICIOUS

PDF

38.3 KB Created: 2020-08-14 22:58:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f8be49d1837bf83483f21032505ce55b SHA-1: 5aa773f79e97df6d29c16f22ae033f50d75f3e62 SHA-256: 96f03fdca1f6fc3a9507080157476b1a52a30ec833f359dda8b842680fb8dea2
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that prompts the user to download a file, disguised by a call-to-action phrase. The document body contains text related to 'pdf file to jpg image converter online' and a link to a malicious redirector at ttraff.com. The PDF also contains a large number of embedded links, many of which point to Shopify domains, but one is to a suspicious domain.

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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 https://ttraff.com/pify?keyword=pdf+file+to+jpg+image+converter+online
    • http://kepesufi.kyobradio913.com/uploads/1/3/1/1/131164250/03258.pdf
    • https://cdn.shopify.com/s/files/1/0431/4379/0760/files/64164538534.pdf
    • https://cdn.shopify.com/s/files/1/0446/6681/4617/files/kondisi_perekonomian_indonesia_saat_ini.pdf
    • https://cdn.shopify.com/s/files/1/0429/8794/6143/files/capacity_planning_notes.pdf
    • https://cdn.shopify.com/s/files/1/0430/7304/4642/files/57072645135.pdf
    • https://cdn.shopify.com/s/files/1/0437/2119/5669/files/kasarelegavusetol.pdf
    • https://cdn.shopify.com/s/files/1/0437/7529/5640/files/56774128208.pdf
    • https://cdn.shopify.com/s/files/1/0435/3071/5288/files/rulirug.pdf
    • https://cdn.shopify.com/s/files/1/0428/0349/5071/files/kimilige.pdf
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/bifovifut.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005853.bin
468de30f64c198634d8824f86a0f9761f5268b00318315688c67dc28bbc4aefb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5853 5432 bytes
font_01_sfnt_off00006ac7.bin
dbdc502e8bca13bca436f85c43bdade09955791a15859840d6bf9cbf621904c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AC7 9916 bytes

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