Malicious PDF — malware analysis report

Static analysis result for SHA-256 881c06a182de9a1a…

MALICIOUS

PDF

40.9 KB Created: 2020-08-05 01:59:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e43e91cc5222f0cad9d185d6fbde3cf SHA-1: b8aadc037eefe0f437e0d8924c4e64833e728fed SHA-256: 881c06a182de9a1a12033bef826e4aecdedef43e254462d18db5a4c8d95df8d9
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. This indicates the document is designed to lead users to malicious content, likely a phishing or malware download page. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to improve search engine visibility for malicious documents. No scripts were extracted, and the document body is heavily obfuscated, but the primary intent appears to be redirection via the malicious URL.

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=basic+networking+concepts+book+pdf
    • http://files.ionnibiru.com/uploads/1/3/0/8/130873855/3685ac83.pdf
    • http://files.deepdabarberonline.com/uploads/1/3/2/7/132710601/4085536.pdf
    • http://files.rightcareerfit.com/uploads/1/3/2/6/132682802/8803123.pdf
    • http://files.apparatusdancetheater.org/uploads/1/3/0/7/130738969/dogiviziz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78986196578.pdf
    • https://cdn.shopify.com/s/files/1/0435/3556/4949/files/attorneys_bookkeeping_notes.pdf
    • https://cdn.shopify.com/s/files/1/0440/7630/2486/files/52513907219.pdf
    • https://cdn.shopify.com/s/files/1/0431/0892/5602/files/mabopulisamobitozumenom.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43127542751.pdf
    • https://cdn.shopify.com/s/files/1/0429/5095/1066/files/40759127524.pdf
    • https://cdn.shopify.com/s/files/1/0431/1390/6327/files/39783841905.pdf
    • https://cdn.shopify.com/s/files/1/0433/2729/1544/files/10814860034.pdf
    • https://cdn.shopify.com/s/files/1/0432/9432/6949/files/zulasavelusoxix.pdf
    • https://cdn.shopify.com/s/files/1/0432/0398/5570/files/70221146968.pdf
    • https://cdn.shopify.com/s/files/1/0428/9101/8396/files/69662499591.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_off0000619f.bin
b9bdaf99951e9f580034c2d49121f837ebfa602fbb81e7acf1c17b42347a20ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x619F 5636 bytes
font_01_sfnt_off000074ec.bin
02533130b00014e80b0cb04103a2760eb7ecf5ade3b57018e43e921e647fb72a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74EC 9936 bytes

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