Malicious PDF — malware analysis report

Static analysis result for SHA-256 e784af118051c811…

MALICIOUS

PDF

41.4 KB Created: 2020-08-30 23:47:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c13f9e9eb49cc331fb204820ad2b97d SHA-1: e4bd947969cc31070f13fde487beb8f32986e541 SHA-256: e784af118051c8114c8b7b69cbd1c8e41f4903c4e56508cd05f1a8686677c08b
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass link farm, with one critical link pointing to a known malicious redirector at https://ttraff.com/wix?keyword=7.+3+protecting+biodiversity+worksheet+answers. The document body, though heavily obfuscated, contains this same URL, suggesting the primary intent is to redirect the user to malicious infrastructure. The presence of numerous other links to Shopify domains, while marked as benign, serves to camouflage the malicious redirector within a larger set of links.

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=7.+3+protecting+biodiversity+worksheet+answers
    • https://cdn.shopify.com/s/files/1/0467/7461/6217/files/dividers_for_binders_template.pdf
    • https://cdn.shopify.com/s/files/1/0433/6818/6015/files/how_to_download_from_icloud_to_andro.pdf
    • https://cdn.shopify.com/s/files/1/0432/7945/0272/files/zodiac_signs_dates_and_meanings.pdf
    • https://cdn.shopify.com/s/files/1/0428/9419/6902/files/19541275375.pdf
    • https://static.usrfiles.com/ugd/ddb60a_e25f5cb4f451439fb38d73f78a0f3596.pdf
    • https://cdn.shopify.com/s/files/1/0434/7808/9878/files/nudesisunibuvumubo.pdf
    • https://cdn.shopify.com/s/files/1/0438/7602/4475/files/vurap.pdf
    • https://cdn.shopify.com/s/files/1/0463/0803/2669/files/17411447828.pdf
    • https://cdn.shopify.com/s/files/1/0427/5165/6102/files/bexakogumumekobomatidas.pdf
    • https://cdn.shopify.com/s/files/1/0432/8289/0918/files/couper_gratuit_en_ligne.pdf
    • https://cdn.shopify.com/s/files/1/0430/2556/3799/files/john_deere_410d_backhoe_service_manu.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_off00006060.bin
c45134c80e510b5e36eaa7eb61c71753fa30994d90ff544a6c4f771e950bee4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6060 5940 bytes
font_01_sfnt_off000074a9.bin
f28d467d81852588b6a715a8a475851f3de06fa44dbbf3b495329a1b6c3b9449		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74A9 10628 bytes

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