Malicious PDF — malware analysis report

Static analysis result for SHA-256 dca0c0af70064505…

MALICIOUS

PDF

35.0 KB Created: 2020-09-01 04:28:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c6fd19e87d3d0b7e45e95c7c6e974e0 SHA-1: eeab469dad731f0b5a268e07a089d26ea4ee6ebc SHA-256: dca0c0af70064505ab2bb36f687e24d040c2c554c2ec0b71105e1d469a9a36ad
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.ru', which is associated with a keyword search for 'starbucks logo vector'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains. The document body, though heavily obfuscated, contains the redirector URL and other Shopify URLs, suggesting a coordinated effort to distribute malicious links under the guise of legitimate-looking 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/wix?keyword=starbucks+logo+vector
    • https://cdn.shopify.com/s/files/1/0437/7827/7525/files/frank_s_hospital_workshop.pdf
    • https://cdn.shopify.com/s/files/1/0437/6775/8997/files/madisanalajixetulabalonu.pdf
    • https://cdn.shopify.com/s/files/1/0441/0910/3256/files/rann_goldrich_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/2053/2386/files/reddit_stardew_valley_year_1_guide.pdf
    • https://cdn.shopify.com/s/files/1/0429/6962/8828/files/ruby_cash_register.pdf
    • https://cdn.shopify.com/s/files/1/0433/8758/4677/files/photo_to_cartoon_animation_software_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/4103/7207/files/fabebawamimelek.pdf
    • https://cdn.shopify.com/s/files/1/0429/2935/6959/files/3762405308.pdf
    • https://cdn.shopify.com/s/files/1/0432/9917/6612/files/velilisaravitosegotoxeted.pdf
    • https://cdn.shopify.com/s/files/1/0434/0698/3335/files/wufulokebuwebosazabe.pdf
    • https://cdn.shopify.com/s/files/1/0431/4162/8053/files/2846997871.pdf
    • https://cdn.shopify.com/s/files/1/0437/2099/9064/files/utsa_biomedical_engineering_degree_plan.pdf
    • https://cdn.shopify.com/s/files/1/0439/2235/8427/files/xuvonedufoxazir.pdf
    • https://cdn.shopify.com/s/files/1/0434/7609/1045/files/video_song_ehsas_by_naveed_akhtar.pdf
    • https://cdn.shopify.com/s/files/1/0434/6819/3952/files/dugekimazinuk.pdf
    • https://cdn.shopify.com/s/files/1/0430/0010/3073/files/97661113851.pdf
    • https://cdn.shopify.com/s/files/1/0432/8698/6908/files/nefan.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_off00004b26.bin
7c89b501e02f5e94d6fe1202daac4859236f417587358098edfa9b73e0c0c209
pdf-font-stream PDF embedded font (sfnt) at offset 0x4B26 5332 bytes
font_01_sfnt_off00005d60.bin
7ff0690dbf8599cddf7d02a2354f26a7d34951873750c9d55e7274b144253ff1
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D60 9912 bytes