Malicious PDF — malware analysis report

Static analysis result for SHA-256 af1399beff6faab7…

MALICIOUS

PDF

40.7 KB Created: 2020-08-24 18:56:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 99ba06155d45c4274f9c2fa4bebfce09 SHA-1: 681a85543faa14c1e529ca4bda68792ede20298b SHA-256: af1399beff6faab73cad8c6bcc18fd531a6aa77d3439d56195ad440f3b654211
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. It also exhibits characteristics of a PDF SEO link farm, with numerous embedded links, many of which point to benign Shopify URLs but some lead to unknown domains. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=kawasaki+z125+pro+service+manual', suggesting a lure to download a service manual which redirects to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=kawasaki+z125+pro+service+manual
    • http://vuvupano.seendlyefield.org/uploads/1/3/0/8/130814328/jovuxuzoso.pdf
    • http://damulove.clearwatersrealty.com/uploads/1/3/1/4/131406082/fusulelibunilali.pdf
    • https://cdn.shopify.com/s/files/1/0428/4085/0598/files/gosutuwo.pdf
    • https://cdn.shopify.com/s/files/1/0432/4727/2098/files/20501897501.pdf
    • https://cdn.shopify.com/s/files/1/0454/3384/7966/files/ayurveda_books_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0018/4477/files/ontology_definition.pdf
    • https://cdn.shopify.com/s/files/1/0434/4184/8470/files/akan_language_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0460/7465/8980/files/vimekujogekalup.pdf
    • https://cdn.shopify.com/s/files/1/0437/1926/2357/files/bring_up_genius_laszlo_polgar.pdf
    • https://cdn.shopify.com/s/files/1/0433/7922/8837/files/cnc_arduino_software.pdf
    • https://cdn.shopify.com/s/files/1/0429/0222/5059/files/74497053098.pdf
    • https://cdn.shopify.com/s/files/1/0434/6462/2242/files/97229148907.pdf
    • https://cdn.shopify.com/s/files/1/0436/1856/6306/files/functional_skills_maths_revision_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/7854/9665/files/misefoxevumu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/15138334831.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_off00005209.bin
b32084fbde2a936c926da06d4f6c7044d90128963bc80bf102ed9cd20378afe5
pdf-font-stream PDF embedded font (sfnt) at offset 0x5209 5424 bytes
font_01_sfnt_off0000647d.bin
de8bfa66f2d2f7f27da9d1b5eaf9f0ffe303b8a28a377a8a8ea4ec559117af0c
pdf-font-stream PDF embedded font (sfnt) at offset 0x647D 10236 bytes
font_02_sfnt_off00008794.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71
pdf-font-stream PDF embedded font (sfnt) at offset 0x8794 4324 bytes