Malicious PDF — malware analysis report

Static analysis result for SHA-256 9999e503e0385b87…

MALICIOUS

PDF

46.0 KB Created: 2020-08-19 14:20:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ab3069552e3d8e30ff0083dcc89aae4 SHA-1: 04a50a1c63c170ace87a4393e6758519d9499dee SHA-256: 9999e503e0385b871911af6776a5349ab5158778defd4593e6d86d309615021d
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=konica+autoreflex+tc+user+guide'. The document body, though heavily obfuscated, contains references to this URL and other embedded URLs, suggesting a link farm or redirection scheme. The presence of numerous external PDF links, many hosted on Shopify, further indicates a potential SEO poisoning or link farm tactic to distribute malicious content.

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=konica+autoreflex+tc+user+guide
    • http://files.curielkitchendesigns.co.uk/uploads/1/3/1/8/131856326/f384d4c795948.pdf
    • http://xigokoda.brookebittel.com/uploads/1/3/2/6/132682883/gipis-xanunarikufu-posuwoxujuwe.pdf
    • http://files.npquinn.com/uploads/1/3/1/6/131606118/mozerazurafi.pdf
    • http://files.nealybirthandlactation.com/uploads/1/3/1/0/131070895/zogozorumipas-sudadarowiro-fepofonel-tudeverigax.pdf
    • http://monoxi.juditvarga.net/uploads/1/3/1/0/131070858/4856670.pdf
    • https://cdn.shopify.com/s/files/1/0434/2317/0710/files/55007442020.pdf
    • https://cdn.shopify.com/s/files/1/0440/2737/9877/files/activity_books_for_11_year_olds.pdf
    • https://cdn.shopify.com/s/files/1/0443/9402/1030/files/demenaloxov.pdf
    • https://cdn.shopify.com/s/files/1/0429/8945/3473/files/91796424159.pdf
    • https://cdn.shopify.com/s/files/1/0441/3492/4440/files/favuvun.pdf
    • https://cdn.shopify.com/s/files/1/0437/8106/2817/files/ramiwemaxusivebutozope.pdf
    • https://cdn.shopify.com/s/files/1/0430/1042/4985/files/wabetesuna.pdf
    • https://cdn.shopify.com/s/files/1/0430/4817/3722/files/73594045162.pdf
    • https://cdn.shopify.com/s/files/1/0431/9716/9824/files/lonaj.pdf
    • https://cdn.shopify.com/s/files/1/0438/1815/6192/files/barefoot_in_the_park_play_script_free.pdf
    • https://cdn.shopify.com/s/files/1/0441/1896/6424/files/golf_course_website_design_templates.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000601d.bin
4ebf429bd70b9455bc2a1d8b2b7ac79ea4c782ba76bee139b88a880331e529e9
pdf-font-stream PDF embedded font (sfnt) at offset 0x601D 5224 bytes
font_01_sfnt_off000071f4.bin
761693375fc265176bc3f95572370efeb36d4288903365dc6badeb91a74fd6d4
pdf-font-stream PDF embedded font (sfnt) at offset 0x71F4 10192 bytes
font_02_sfnt_off00009505.bin
028dbaa76d48ae99b02248bacea50134e27ed131f5dd39e25ac401de8961e19b
pdf-font-stream PDF embedded font (sfnt) at offset 0x9505 16312 bytes