Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd0b126b6b0205d3…

MALICIOUS

PDF

40.0 KB Created: 2020-08-30 03:44:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 585b219f4233dfecf7830ce9ab50cd9f SHA-1: 8a39c8f870b185a2e27c8b3ecb27b453356e8405 SHA-256: dd0b126b6b0205d38018d1142da12ad0a3bb5a9c8b968e3b378a67243ea6e7da
120 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'. The document body, though heavily obfuscated, contains the same URL and a reference to 'wkhtmltopdf', suggesting it's a generated document. The presence of a large number of embedded links, many hosted on Shopify, indicates a link farm strategy, with the primary malicious link being the redirector.

Heuristics 3

  • 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.
  • 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/wix?keyword=mr+majnu+songs+download+naa+songs
    • https://cdn.shopify.com/s/files/1/0429/4030/1478/files/mazatinelu.pdf
    • https://cdn.shopify.com/s/files/1/0427/7701/8524/files/2845228931.pdf
    • https://cdn.shopify.com/s/files/1/0432/0133/1360/files/fidijo.pdf
    • https://cdn.shopify.com/s/files/1/0435/6525/2771/files/intern_survival_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/6652/2790/files/74349145954.pdf
    • https://cdn.shopify.com/s/files/1/0431/8222/7617/files/jekasopewugusi.pdf
    • https://cdn.shopify.com/s/files/1/0432/1479/9012/files/vanilugitorupet.pdf
    • https://cdn.shopify.com/s/files/1/0430/6219/8425/files/gusotiv.pdf
    • https://cdn.shopify.com/s/files/1/0431/6174/7620/files/animation_cartoon_software_free.pdf
    • https://cdn.shopify.com/s/files/1/0460/5932/3547/files/call_of_duty_mobile_hack_script_android.pdf
    • https://cdn.shopify.com/s/files/1/0430/5059/8562/files/36957006876.pdf
    • https://cdn.shopify.com/s/files/1/0434/1815/7221/files/bihar_board_admit_card_2017.pdf
    • https://cdn.shopify.com/s/files/1/0462/4941/0714/files/home_inspection_report.pdf
    • https://cdn.shopify.com/s/files/1/0431/0230/6468/files/boxijogofixivuzolelubamuz.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_off0000577d.bin
ad0dc5a9d1e91c2ef724316ba24ba0247ac2c87ef5748e33eba5f5f117bbfed8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x577D 5316 bytes
font_01_sfnt_off0000698e.bin
2c5596354a8689468cffa64ed1c92c7f4493618c765463711cb2fda792f24652		 pdf-font-stream PDF embedded font (sfnt) at offset 0x698E 12528 bytes

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