Malicious PDF — malware analysis report

Static analysis result for SHA-256 2356a4743803e356…

MALICIOUS

PDF

37.5 KB Created: 2020-08-18 14:25:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d66fec61563bd9a691edac2ed2f73c4d SHA-1: 65bcf2249e8f1b5d77799a8c03c2b1732bd001b2 SHA-256: 2356a4743803e3561dfed02194e9479e31e9276b988d91be6972cc40e0ab85f1
128 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'. Additionally, it exhibits a PDF link farm heuristic, with numerous links pointing to Shopify domains, one of which is the primary redirector. The document body, though heavily obfuscated, contains the malicious URL and appears to be a lure for 'good morning shayari photo hd', suggesting a social engineering pretext. The presence of a download button heuristic further supports a malicious workflow.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=good+morning+shayari+photo++hd
    • http://files.international-mini-mba.org/uploads/1/3/0/7/130775033/zelib.pdf
    • http://zufatedaj.nurturenourishflourish.net/uploads/1/3/1/3/131383839/4394295.pdf
    • http://files.glenelder.com/uploads/1/3/2/6/132696280/noxenevi.pdf
    • http://files.ericgohphotography.com/uploads/1/3/1/6/131636676/4995b15c0c.pdf
    • https://cdn.shopify.com/s/files/1/0438/8693/6219/files/61536344149.pdf
    • https://cdn.shopify.com/s/files/1/0430/7589/5447/files/waxiwululaso.pdf
    • https://cdn.shopify.com/s/files/1/0428/8331/7926/files/25252180742.pdf
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/raavan_enemy_of_aryavarta_amish_tripathi_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pafinekumukomotutawewokab.pdf
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/22809344278.pdf
    • https://cdn.shopify.com/s/files/1/0429/2496/6044/files/branches_of_economics.pdf
    • https://cdn.shopify.com/s/files/1/0434/8336/5528/files/8282808348.pdf
    • https://cdn.shopify.com/s/files/1/0433/1814/9285/files/ninutudidumopororijaro.pdf
    • https://cdn.shopify.com/s/files/1/0434/2359/6693/files/small_aircraft_wing_structure_design.pdf
    • https://cdn.shopify.com/s/files/1/0437/5176/8225/files/bivitimujanugo.pdf
    • https://cdn.shopify.com/s/files/1/0433/4275/8056/files/84092837972.pdf
    • https://cdn.shopify.com/s/files/1/0447/9765/7248/files/gramatyka_jzyk_angielski.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/baxumedufimoval.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_off000054fd.bin
9e3bd8a793aba6c11e7e77378fd8d35cc5ef6fd1d484dc84be3d134ae8289f67
pdf-font-stream PDF embedded font (sfnt) at offset 0x54FD 5472 bytes
font_01_sfnt_off0000677a.bin
ba847bb54d4371c5a00770c735e385a937879a16f35041777090aaaed529f5c6
pdf-font-stream PDF embedded font (sfnt) at offset 0x677A 10104 bytes