Malicious PDF — malware analysis report

Static analysis result for SHA-256 42bdfdb2bec8d25c…

MALICIOUS

PDF

45.0 KB Created: 2020-08-09 07:56:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 253c73eb21056f4245d8ddcda0198323 SHA-1: 8db4eb76b960cf1aab994ba0f3859c73c4a3a55d SHA-256: 42bdfdb2bec8d25cd7bf52ff04691ac65cd876f295e81384b26df91e926efd22
142 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, directing users to 'https://ttraff.cc/pify?keyword=usa+time+zone+chart+pdf'. Additionally, it exhibits a PDF link farm pattern, with numerous links pointing to PDF files hosted on various domains, including Shopify. The document body, though heavily corrupted, contains the URL 'https://ttraff.cc/pify?keyword=usa+time+zone+chart+pdf', reinforcing the lure. The presence of a callback lure heuristic suggests a potential social engineering tactic to engage the user further.

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.cc/pify?keyword=usa+time+zone+chart+pdf
    • http://files.beetle-and-wilde.co.uk/uploads/1/3/2/6/132681976/fd5164cb2.pdf
    • http://files.bridgetghunt.com/uploads/1/3/0/7/130775747/7107167.pdf
    • http://files.atlasandanchortattoo.com/uploads/1/3/1/3/131398333/rupijizonajefoson.pdf
    • https://cdn.shopify.com/s/files/1/0427/6482/8838/files/pixorojun.pdf
    • https://cdn.shopify.com/s/files/1/0433/8014/6343/files/nizewaxe.pdf
    • https://cdn.shopify.com/s/files/1/0433/8506/1541/files/durga_saptashati_beej_mantra_in_sanskrit.pdf
    • https://cdn.shopify.com/s/files/1/0430/7563/3306/files/79978394427.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wuwikeg.pdf
    • https://cdn.shopify.com/s/files/1/0431/2363/8426/files/97977517640.pdf
    • https://cdn.shopify.com/s/files/1/0431/5856/9128/files/58575909137.pdf
    • https://cdn.shopify.com/s/files/1/0429/4492/1766/files/34172766956.pdf
    • https://cdn.shopify.com/s/files/1/0431/9825/1165/files/21122421236.pdf
    • https://cdn.shopify.com/s/files/1/0432/4625/6295/files/ecologista_definicion.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_off000065b9.bin
425b529a5768f4cca5acde24b1e521692a6637f749197075c2990785072e908f
pdf-font-stream PDF embedded font (sfnt) at offset 0x65B9 5192 bytes
font_01_sfnt_off00007736.bin
61bd903d34d0be39234169d47d8b4f52424a11f55fd57b093b0f2b3ff7387252
pdf-font-stream PDF embedded font (sfnt) at offset 0x7736 9920 bytes
font_02_sfnt_off0000993f.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x993F 4324 bytes