Malicious PDF — malware analysis report

Static analysis result for SHA-256 e67199911f31b323…

MALICIOUS

PDF

70.2 KB Created: 2020-08-03 14:23:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1ce0088ccb402abc9ab074ad8572ffb0 SHA-1: cdfd4af46f7ae1ee19481d06a057240a9ba41333 SHA-256: e67199911f31b3237f13aec472a78b4661d57832ef928b63e27130900b81934d
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.ru, which is likely used to obscure the final destination of the malicious payload. The document body, though heavily obfuscated, contains text related to 'Lok sabha election date 2020 pdf', suggesting a lure to trick users into clicking the malicious link. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous embedded URLs further supports the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=lok+sabha+election+date+2020+pdf
    • http://rutijozi.whareafire.com/uploads/1/3/1/3/131380845/3776339.pdf
    • http://files.axsbeta.org/uploads/1/3/0/7/130740530/togelakitit.pdf
    • http://files.catherine-mcavoy.com/uploads/1/3/2/7/132740181/e9bbb.pdf
    • https://cdn.shopify.com/s/files/1/0431/0433/8073/files/jesinaramiwaw.pdf
    • https://cdn.shopify.com/s/files/1/0432/8328/4136/files/zexared.pdf
    • https://cdn.shopify.com/s/files/1/0432/0775/3888/files/vukevotudemoluxoma.pdf
    • https://cdn.shopify.com/s/files/1/0430/8212/1377/files/98590923856.pdf
    • https://cdn.shopify.com/s/files/1/0434/6567/0806/files/34433240089.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/26450283228.pdf
    • https://cdn.shopify.com/s/files/1/0433/2647/2345/files/14399537919.pdf
    • https://cdn.shopify.com/s/files/1/0430/7632/1434/files/xizovo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/91300886864.pdf
    • https://cdn.shopify.com/s/files/1/0451/1475/3189/files/alfred_hitchcock_presents_season_7_episode_38.pdf
    • https://cdn.shopify.com/s/files/1/0429/7113/6154/files/95685110986.pdf
    • https://cdn.shopify.com/s/files/1/0432/6057/5894/files/dumemagubub.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_off0000d5a8.bin
77a3750b4f6e59d596b9db770504be9cea4fd99be6903ccf365f0e797977228a
pdf-font-stream PDF embedded font (sfnt) at offset 0xD5A8 5568 bytes
font_01_sfnt_off0000e895.bin
28d6f397a00ce06cf22a1f8604d6b10a54f3f6b4755f86c3fb335fd648d7b152
pdf-font-stream PDF embedded font (sfnt) at offset 0xE895 10356 bytes