Malicious PDF — malware analysis report

Static analysis result for SHA-256 87d40e340fdb6e58…

MALICIOUS

PDF

53.5 KB Created: 2020-08-05 17:36:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ce4dba51af85b91f4ebb094636d357c8 SHA-1: 5e6d6dcedd920af7dd0baafd1f7825dc04cd29e0 SHA-256: 87d40e340fdb6e58452522e8af2c53515fec3c4a14358258e2e226644167cd8b
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.ru'. Additionally, it exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the malicious URL, suggesting an attempt to trick the user into clicking it. The presence of a callback lure heuristic further supports a phishing or scam-related attack pattern.

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.ru/pify?keyword=neoliberalismo+globalizacion+y+alternativas+economicas+pdf
    • http://files.keishamorris.com/uploads/1/3/1/6/131636833/c0058d61a67249.pdf
    • http://files.stitchesbylynsey.com/uploads/1/3/0/7/130738499/7513939f.pdf
    • http://files.ponyselectbaseball.org/uploads/1/3/2/3/132303170/sesobera_xobiju_nixefuzotezop.pdf
    • http://files.pepsqually.com/uploads/1/3/1/4/131438397/sawepexaw-gekat-govevaxawo.pdf
    • http://files.nmsuchristianchallenge.org/uploads/1/3/1/3/131381555/larekuloxajofel-vefuxige-webemada.pdf
    • https://cdn.shopify.com/s/files/1/0434/8136/6693/files/jeroginupetadufok.pdf
    • https://cdn.shopify.com/s/files/1/0430/7012/8277/files/sixorobowidufarip.pdf
    • https://cdn.shopify.com/s/files/1/0430/3503/3757/files/55939948055.pdf
    • https://cdn.shopify.com/s/files/1/0435/9385/9231/files/mcc_codes_usmc.pdf
    • https://cdn.shopify.com/s/files/1/0431/2789/8268/files/15961733694.pdf
    • https://cdn.shopify.com/s/files/1/0427/4785/5004/files/movome.pdf
    • https://cdn.shopify.com/s/files/1/0434/5102/3526/files/nesarevozafigi.pdf
    • https://cdn.shopify.com/s/files/1/0428/4101/4438/files/51267174134.pdf
    • https://cdn.shopify.com/s/files/1/0432/4373/3154/files/minecraft_ps4_seed_map.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xasojikunu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/31321710084.pdf
    • https://cdn.shopify.com/s/files/1/0434/7399/3890/files/3293096481.pdf
    • https://cdn.shopify.com/s/files/1/0431/1659/3312/files/17433357589.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_off00008c37.bin
c7ed896f28e95ed41827a26bd5d8464d210b2ce3dd404a5b72348b03fdf40ff8
pdf-font-stream PDF embedded font (sfnt) at offset 0x8C37 5796 bytes
font_01_sfnt_off00009ff7.bin
a431b3056e3c90852ea7e6fbecbba1f5f125567364527e88a1f8e2c1cb38fff8
pdf-font-stream PDF embedded font (sfnt) at offset 0x9FF7 11736 bytes