Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c069c8fe7b7358e…

MALICIOUS

PDF

51.6 KB Created: 2020-08-20 01:21:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49990959b9b8e89748d2fce19b0f3ae8 SHA-1: c217337dffb802e56c1edcfaa77744c190df8497 SHA-256: 3c069c8fe7b7358e16274b0300f23b6f3afb5c17a007ffb914aaa6313a1762e5
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.cc). The document body, though heavily obfuscated, contains the text 'Fiber cement roofing sheet' and the malicious URL, suggesting a lure to trick users into clicking the link. No scripts were extracted, but the presence of a malicious redirector link is a strong indicator of malicious intent.

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.cc/pify?keyword=fiber+cement+roofing+sheet
    • http://files.laurelweldon.com/uploads/1/3/1/6/131636758/e870cef856368d2.pdf
    • https://cdn.shopify.com/s/files/1/0430/8303/8881/files/juvobigepavumatalow.pdf
    • https://cdn.shopify.com/s/files/1/0435/8085/0335/files/awk_programming_language.pdf
    • https://cdn.shopify.com/s/files/1/0435/1610/0776/files/ge_refridgerator_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/90414950956.pdf
    • https://cdn.shopify.com/s/files/1/0432/2505/5389/files/degonenudupegutofanawu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7431/3621/files/46841376100.pdf
    • https://cdn.shopify.com/s/files/1/0434/9450/6661/files/adding_and_subtracting_fraction_problems_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/4449/4750/files/32278958699.pdf
    • https://cdn.shopify.com/s/files/1/0432/0378/8960/files/34716130525.pdf
    • https://cdn.shopify.com/s/files/1/0429/2309/8279/files/kubota_b7800_for_sale.pdf
    • https://cdn.shopify.com/s/files/1/0438/0190/3264/files/formal_definition_of_mass_number.pdf
    • https://todayshomeowner.com/wp-cont
    • 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_off00008ca4.bin
49e3b5c40a67f23ae0badf5343b183d4066e3c7fe1a82875783b02154bd1a426		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CA4 5148 bytes
font_01_sfnt_off00009e0a.bin
cc654b4fc0f6173fffc69961a6a38e7438deb26f369e7a2a45b3471e1e8f7bac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E0A 10352 bytes

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