Malicious PDF — malware analysis report

Static analysis result for SHA-256 2db6b261fb9a556c…

MALICIOUS

PDF

48.2 KB Created: 2020-08-18 17:12:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6613deec3d073ecbbe0a1b52189f81fa SHA-1: 0ef753066de2973cb8a310d0cdedc1139002e70e SHA-256: 2db6b261fb9a556c716bbcb320ad1c7891a861650d05f5af56a5e198fdf7998c
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, characteristic of a link farm. The primary link, https://ttraff.ru/pify?keyword=chugakusei+nikki+original+soundtrack, is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL and numerous other links hosted on Shopify, suggesting a coordinated effort to distribute malicious content or conduct phishing attacks. No scripts were extracted from this sample.

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=chugakusei+nikki+original+soundtrack
    • http://files.mazcan.com/uploads/1/3/0/9/130969689/jenavab_xetonewefum_vegodiniwenu.pdf
    • http://files.sanfranitaart.com/uploads/1/3/1/8/131871625/tuxex.pdf
    • https://cdn.shopify.com/s/files/1/0435/4319/9898/files/23993611222.pdf
    • https://cdn.shopify.com/s/files/1/0430/6547/5226/files/29029576013.pdf
    • https://cdn.shopify.com/s/files/1/0433/8712/5927/files/xumukojebagudoxonibi.pdf
    • https://cdn.shopify.com/s/files/1/0435/6728/4387/files/46085478555.pdf
    • https://cdn.shopify.com/s/files/1/0432/2079/5556/files/90526255540.pdf
    • https://cdn.shopify.com/s/files/1/0446/1376/3235/files/complementary_and_alternative_therapies_for_nursing_practice_fontaine.pdf
    • https://cdn.shopify.com/s/files/1/0431/8108/0725/files/85580436161.pdf
    • https://cdn.shopify.com/s/files/1/0435/6302/4542/files/java_games_code.pdf
    • https://cdn.shopify.com/s/files/1/0430/7727/1713/files/cm3d2_bepin_version._dll_x86.pdf
    • https://cdn.shopify.com/s/files/1/0434/7104/4770/files/8728687309.pdf
    • https://cdn.shopify.com/s/files/1/0440/6778/2808/files/wolixe.pdf
    • https://cdn.shopify.com/s/files/1/0434/5951/0425/files/noruwezoxiru.pdf
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/telavatibugizavixeti.pdf
    • https://cdn.shopify.com/s/files/1/0436/3524/5214/files/34502287628.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_off0000656d.bin
e055dd87ed8409153664b725bf41d0da2da90790727bbbf5662b121ed241dd75
pdf-font-stream PDF embedded font (sfnt) at offset 0x656D 3108 bytes
font_01_sfnt_off0000708f.bin
1f49c6c2234949c79a7a8c5c28bb9ed7d33042d69034be7ba4628d60559ebd4e
pdf-font-stream PDF embedded font (sfnt) at offset 0x708F 5172 bytes
font_02_sfnt_off00008218.bin
c517e607b19d568dc8d6c12a34246f67297b842daa34ee9af343f8ec0eedcf6d
pdf-font-stream PDF embedded font (sfnt) at offset 0x8218 15856 bytes