Malicious PDF — malware analysis report

Static analysis result for SHA-256 33265a4ef79a3fcb…

MALICIOUS

PDF

45.3 KB Created: 2020-08-13 23:06:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 936e31a1c127b1b93934789bfae1a3f5 SHA-1: f3d8a18cbf40f9ceddc36f798e2a8c4ad7c8fbe0 SHA-256: 33265a4ef79a3fcbab2e93d625d0cc8ae9a2c1ffb114b5d334e023974af422aa
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 'https://ttraff.ru/pify?keyword=brownie+household+elf+badge+requirements+pdf'. This indicates the document's primary purpose is to redirect users to malicious sites. The presence of a PDF link farm further supports the malicious intent, aiming to distribute links to potentially harmful content. No scripts were extracted, and the document body is heavily obfuscated.

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.ru/pify?keyword=brownie+household+elf+badge+requirements+pdf
    • http://files.nssdoctors.com/uploads/1/3/1/1/131164442/nuvexowuraxu-juwelafiwaf.pdf
    • http://files.sunrisesolstice.org/uploads/1/3/0/7/130775921/wobizuvujal_ralob.pdf
    • http://rimuz.okpeo.org/uploads/1/3/2/6/132682156/suboxoxugepolebujot.pdf
    • https://cdn.shopify.com/s/files/1/0429/9515/5105/files/divina_commedia_purgatorio_canto_1.pdf
    • https://cdn.shopify.com/s/files/1/0432/1335/7214/files/titan_quest_anniversary_edition_mods.pdf
    • https://cdn.shopify.com/s/files/1/0434/9578/4600/files/45296901788.pdf
    • https://cdn.shopify.com/s/files/1/0433/9433/4869/files/moziximigetadilop.pdf
    • https://cdn.shopify.com/s/files/1/0429/2929/1427/files/hemostasis_mechanism.pdf
    • https://cdn.shopify.com/s/files/1/0431/8271/9136/files/rewibivi.pdf
    • https://cdn.shopify.com/s/files/1/0438/5302/1334/files/command_prompt_commands_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/3631/9645/files/33278399689.pdf
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/intermediate_2nd_year_zoology_textbook_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/4482/1409/files/aquarium_architecture_design.pdf
    • https://cdn.shopify.com/s/files/1/0432/3213/3278/files/bankers_adda_current_affairs_capsule.pdf
    • https://cdn.shopify.com/s/files/1/0429/2725/9811/files/memawevipibuwosis.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_off00007248.bin
e430d044b22564ec6595529eace75f085959e44670b4401a9add49bfd2a310ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7248 5860 bytes
font_01_sfnt_off00008616.bin
b908218586515be01967b1ce2f00738702876b4cb65fe225737e44d5d5b41a9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8616 10124 bytes

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