Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0ed51aac7d730ec…

MALICIOUS

PDF

44.4 KB Created: 2020-08-08 06:15:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57a1b157e17d306395de205ea4b924f9 SHA-1: f9c847864102c079fef7e76eb9b43ca1019b6215 SHA-256: c0ed51aac7d730ec2ff4e3998dd0f7bd13c0e444d2524a39cc079e1e4c57412b
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 pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'https://ttraff.ru/pify?keyword=add+text+to+pdf+adobe+9'. This indicates a link farm or SEO poisoning tactic designed to drive traffic to malicious infrastructure. The document body, though heavily obfuscated, contains text related to PDF manipulation and includes the same malicious URL, reinforcing the lure.

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=add+text+to+pdf+adobe+9
    • http://files.rescuetheunderdog.com/uploads/1/3/0/8/130874518/309410.pdf
    • http://belusopo.northbynorthweft.net/uploads/1/3/1/3/131383483/gonisosanibaxapofez.pdf
    • http://files.mchenrymaltesepuppies.com/uploads/1/3/1/0/131070934/temudijon_xiribafut_wovavoniw.pdf
    • http://files.aroundthepros.com/uploads/1/3/0/8/130814769/guzujofawutef.pdf
    • http://files.saugusxc.net/uploads/1/3/2/6/132695543/goloxiv-mired-zakobegoselaten.pdf
    • https://cdn.shopify.com/s/files/1/0437/0753/1432/files/299731951.pdf
    • https://cdn.shopify.com/s/files/1/0433/9875/8557/files/bebivaxu.pdf
    • https://cdn.shopify.com/s/files/1/0430/9975/0560/files/11112477020.pdf
    • https://cdn.shopify.com/s/files/1/0430/1655/2605/files/pavovukoxedodowuja.pdf
    • https://cdn.shopify.com/s/files/1/0432/5117/1478/files/69289274566.pdf
    • https://cdn.shopify.com/s/files/1/0432/2259/7800/files/basic_python_tutorial_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0434/6681/7689/files/65975820078.pdf
    • https://cdn.shopify.com/s/files/1/0440/1525/5710/files/susan_bassnett_translation_studies.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/10809735118.pdf
    • https://cdn.shopify.com/s/files/1/0435/8157/1227/files/60724323368.pdf
    • https://cdn.shopify.com/s/files/1/0431/8032/7076/files/62711136791.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_off0000657c.bin
b9040adb576661c2800495586c46bd0bf8891106ad768f173ab5744433393964
pdf-font-stream PDF embedded font (sfnt) at offset 0x657C 4716 bytes
font_01_sfnt_off0000758b.bin
90e65c8cb2c0e483c6a4debef39ec2f05d9e753e5f27d144a2b5ab5ba34db698
pdf-font-stream PDF embedded font (sfnt) at offset 0x758B 9752 bytes
font_02_sfnt_off000096e9.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x96E9 4324 bytes