Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f46f0dd758adf51…

MALICIOUS

PDF

44.8 KB Created: 2020-08-23 02:48:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 645d2ad406285844e274085f53ae01aa SHA-1: 15c7f779dd118673ca35b19b260e2bebf11b7f17 SHA-256: 3f46f0dd758adf51135b12d55aea8f215b5afbaafd043271836b740bd8dc5c75
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which are hosted on Shopify but also include links to potentially malicious domains. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=classification_report+precision+recall+f1-+score+support'. The document body, though partially corrupted, also contains this URL and references a classification report, suggesting a lure to entice users to click on the embedded 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.ru/pify?keyword=classification_report+precision+recall+f1-+score+support
    • http://files.originalsexyslave.com/uploads/1/3/2/6/132681826/b8670.pdf
    • http://files.thestitchedbird.co.uk/uploads/1/3/1/4/131437724/53fc9da.pdf
    • http://files.allornothingnutrition.co.uk/uploads/1/3/0/7/130775795/filamukigir.pdf
    • http://mudal.kaileewallis.com/uploads/1/3/0/8/130813108/vunonijoka.pdf
    • https://cdn.shopify.com/s/files/1/0428/9550/7622/files/fokeno.pdf
    • https://cdn.shopify.com/s/files/1/0433/8289/8839/files/devilman_crybaby_netflix.pdf
    • https://cdn.shopify.com/s/files/1/0433/5956/8037/files/wuwojaxogowonuvurabupof.pdf
    • https://cdn.shopify.com/s/files/1/0430/7274/9721/files/92589786636.pdf
    • https://cdn.shopify.com/s/files/1/0431/0489/5143/files/aceite_esencial_de_mandarina.pdf
    • https://cdn.shopify.com/s/files/1/0440/0644/1110/files/aiag_spc_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/6863/7862/files/analytical_hierarchy_process_journal.pdf
    • https://cdn.shopify.com/s/files/1/0431/1449/6161/files/josefulebixek.pdf
    • https://cdn.shopify.com/s/files/1/0431/7410/1160/files/58089949545.pdf
    • https://cdn.shopify.com/s/files/1/0437/6703/8106/files/pipapizazur.pdf
    • https://cdn.shopify.com/s/files/1/0434/0459/1254/files/79539208182.pdf
    • https://cdn.shopify.com/s/files/1/0430/6495/0945/files/diwaxodakipa.pdf
    • https://cdn.shopify.com/s/files/1/0430/0288/8351/files/gatematadomik.pdf
    • https://cdn.shopify.com/s/files/1/0437/0815/4008/files/dijorigosekisiz.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_off00006ac4.bin
5b40e6fba752282ec0854ee185037b47f4bff6efc186997f5c909327cd6caf9d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AC4 5028 bytes
font_01_sfnt_off00007c01.bin
6230102c8c2ea6eabc82077405d8ec46effe12fd694545cce547a695b4e6b697
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C01 12888 bytes