Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2fcdff050329e89…

MALICIOUS

PDF

42.8 KB Created: 2020-08-20 02:16:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46855c1598c8eac34fb3b9cb525134fc SHA-1: 5b16eb481df32a96b6c36693be6ef83ee76357e4 SHA-256: d2fcdff050329e89315e16385e5dba8f18453ee2e3745b0aa9a49299f7fafba4
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating it links to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for 'horror movies free hd'. The primary malicious IOC is the redirector URL, which likely leads to further malicious content. The file also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO poisoning tactic to distribute the malicious PDF.

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/pify?keyword=horror+movies++free+hd
    • http://meriwa.kenjorgensendesigns.com/uploads/1/3/0/9/130969600/8669879.pdf
    • http://files.popideas.org/uploads/1/3/1/6/131606291/vumileviguzefapi.pdf
    • http://degoposo.livyou.org/uploads/1/3/1/3/131381464/5511216.pdf
    • http://xomugos.rachelbrodie.net/uploads/1/3/0/7/130776603/bujir_nabefiluka_dadugamubeduji.pdf
    • https://cdn.shopify.com/s/files/1/0443/4988/2524/files/23085737074.pdf
    • https://cdn.shopify.com/s/files/1/0434/0206/8131/files/angle_of_depression_and_elevation_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/9850/5369/files/square_and_cube_numbers_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0428/3236/3676/files/71297987113.pdf
    • https://cdn.shopify.com/s/files/1/0431/0486/2375/files/wooden_boat_building_plans.pdf
    • https://cdn.shopify.com/s/files/1/0429/1536/5031/files/ccna_200_125_official_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/8897/7813/files/depepixumerokonus.pdf
    • https://cdn.shopify.com/s/files/1/0437/8922/2037/files/95944868440.pdf
    • https://cdn.shopify.com/s/files/1/0437/0723/6503/files/ite_parking_generation_4th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0433/4295/4650/files/16146934951.pdf
    • https://cdn.shopify.com/s/files/1/0445/4160/8100/files/industrial_wastewater_treatment_methods.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_off000069b4.bin
d76c2bbdd7156c077936f51efe908f2dcb4fe164c5a3b02714b2d0650fd4eeeb
pdf-font-stream PDF embedded font (sfnt) at offset 0x69B4 4924 bytes
font_01_sfnt_off00007a55.bin
0679dc29a993b996823accf025d86ebecf3be3cc95feee2577304f281658d606
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A55 10504 bytes