Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7672024d662a8f7…

MALICIOUS

PDF

39.3 KB Created: 2020-08-14 14:51:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 43e0e880034162dc4dc356b26d6a95fc SHA-1: 62aeca31e859af9a33f3e60d903faafd3d2e7f53 SHA-256: c7672024d662a8f7ec88f3c50ee5e158465b31720326fa92026bc465c69461cc
140 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, which is associated with a lure for "bitlocker drive encryption windows 7 free". The document also exhibits characteristics of a callback phishing lure, suggesting a social engineering attempt. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm strategy to potentially obscure the malicious redirector.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=bitlocker+drive+encryption+windows+7+free
    • http://puvum.stefangoanta.com/uploads/1/3/1/4/131453134/vuratawalad.pdf
    • http://files.otterystmarytennisclub.com/uploads/1/3/0/9/130969695/gaguwagi_jajiditotiju_tewodutuf_wutixibuzu.pdf
    • http://niresim.mrsmullis.com/uploads/1/3/1/4/131407558/liketure.pdf
    • https://cdn.shopify.com/s/files/1/0429/4751/0435/files/12304565006.pdf
    • https://cdn.shopify.com/s/files/1/0435/4693/5447/files/50298518748.pdf
    • https://cdn.shopify.com/s/files/1/0431/3477/9553/files/10762549498.pdf
    • https://cdn.shopify.com/s/files/1/0432/2007/4663/files/187832674.pdf
    • https://cdn.shopify.com/s/files/1/0437/4704/9623/files/brain_manipulation.pdf
    • https://cdn.shopify.com/s/files/1/0432/8249/7701/files/wofijok.pdf
    • https://cdn.shopify.com/s/files/1/0434/6635/8934/files/joderifikuvekizejazatadim.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/92161478626.pdf
    • https://cdn.shopify.com/s/files/1/0429/3967/8886/files/39216320084.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/lejejulepawezikitora.pdf
    • https://cdn.shopify.com/s/files/1/0433/5108/1114/files/organic_chemistry_notes_for_class_11_topperlearning.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_off00005c05.bin
fdeb081ad64f172aa655db6720d8c72464e1c1778c03fc752ff7ca2bdb399f85
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C05 5388 bytes
font_01_sfnt_off00006e8c.bin
6a6ae97383e4f9e7cee561d99d16ff82be27feed4d1eb4661ac4edcac3c46c72
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E8C 9940 bytes