Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9c1d914d9d9a87b…

MALICIOUS

PDF

48.0 KB Created: 2020-08-15 08:41:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7357695847886cd6f13d3035599d8504 SHA-1: afa53f216fbcf6278ca41680b2d61677c5db49dd SHA-256: b9c1d914d9d9a87b28daaef95e589df37b610f9a21f4f0c403faa7c18c098b9a
120 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to Shopify domains hosting PDF files, but one critical link redirects to `ttraff.com`. This domain is flagged as a malicious redirector, indicating a phishing or malware distribution attempt. The document body and embedded links suggest a lure related to downloading an English book, which is a common social engineering tactic.

Heuristics 3

  • 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.
  • 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=bcs+english+book+pdf
    • http://derug.asechrestspencer.com/uploads/1/3/0/7/130775934/54d42.pdf
    • https://cdn.shopify.com/s/files/1/0431/7190/5698/files/985956897.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48466687054.pdf
    • https://cdn.shopify.com/s/files/1/0430/8615/1834/files/kopefoxagim.pdf
    • https://cdn.shopify.com/s/files/1/0434/1989/3927/files/1690782439.pdf
    • https://cdn.shopify.com/s/files/1/0435/1596/9688/files/78184061484.pdf
    • https://cdn.shopify.com/s/files/1/0435/5325/9679/files/netbeans_vs_eclipse_performance.pdf
    • https://cdn.shopify.com/s/files/1/0436/4979/4213/files/bipisuwurotume.pdf
    • https://cdn.shopify.com/s/files/1/0430/2798/8634/files/9835888323.pdf
    • https://cdn.shopify.com/s/files/1/0431/6915/3181/files/29919588350.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000597f.bin
fb29cab306c9d1629c32a6c75c13f16ba7b5dde79ee123a1b1a1441b4651a7eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x597F 5364 bytes
font_01_sfnt_off00006ba9.bin
f1b209e3540a6894f7801d0b6d03b9378b2c15076f4af060cc7d2d4a9921ae98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA9 12268 bytes
font_02_sfnt_off0000910f.bin
147c5bce812844493dbd49ae39417e73b2286fd95694213e54c474a7b7109ab5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x910F 10028 bytes

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