Malicious PDF — malware analysis report

Static analysis result for SHA-256 c17912c84b242f88…

MALICIOUS

PDF

41.0 KB Created: 2020-08-15 01:06:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 329c4212805e1a8dcbe73cc0fe272d11 SHA-1: 2d72ecadcfb1dc1225ae98f4b5fd5c4b06c4b663 SHA-256: c17912c84b242f88d7caabbb4392e89f6d0b757136998e1bf33b113a5a97108d
140 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector at 'ttraff.com'. The document body, though partially garbled, contains text related to 'sheet cakes decorated with fresh flowers' and a URL, suggesting a lure. The presence of a PDF_MALICIOUS_REDIRECTOR_LINK heuristic firing confirms the malicious intent of the embedded links. The document also exhibits characteristics of a callback phishing lure, asking the user to call a number in a billing or refund context.

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=sheet+cakes+decorated+with+fresh+flowers
    • http://files.ballaratorphanagechildrenshome.com/uploads/1/3/0/7/130739463/dekoboxi.pdf
    • http://sepeko.domainedefrance.com/uploads/1/3/1/4/131482975/tetejikisavab.pdf
    • http://files.dreamsfindyou.com/uploads/1/3/0/7/130775331/muzekudovarupa.pdf
    • http://files.allanlacoursiere.com/uploads/1/3/0/8/130813458/223c5956dce4ec0.pdf
    • https://cdn.shopify.com/s/files/1/0430/6550/8002/files/jezabivi.pdf
    • https://cdn.shopify.com/s/files/1/0433/2807/7992/files/tinaj.pdf
    • https://cdn.shopify.com/s/files/1/0430/7720/6178/files/11552805193.pdf
    • https://cdn.shopify.com/s/files/1/0439/7950/5822/files/12th_science_biology_book_in_gujarati_sem_3_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/3545/7698/files/scorpion_little_lost_boy.pdf
    • https://cdn.shopify.com/s/files/1/0440/3852/0997/files/big_green_egg_recipe_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/0161/8327/files/56207168717.pdf
    • https://cdn.shopify.com/s/files/1/0434/7399/3890/files/xijoli.pdf
    • https://cdn.shopify.com/s/files/1/0436/0824/4381/files/tutorials_in_introductory_physics_homework.pdf
    • https://cdn.shopify.com/s/files/1/0448/2914/7293/files/amantele_trecutului_online.pdf
    • https://cdn.shopify.com/s/files/1/0428/1496/3868/files/affidavit_form_qld.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_off00006142.bin
0dcb19f6f5fd89b4cd2a6427542ff853ee10d1682701cbafcc8436b97aaa0535
pdf-font-stream PDF embedded font (sfnt) at offset 0x6142 5368 bytes
font_01_sfnt_off0000738d.bin
9b60865d756dcfaed947dee2993f4718bee02d99fe9160ff829a290839d02358
pdf-font-stream PDF embedded font (sfnt) at offset 0x738D 10340 bytes