Malicious PDF — malware analysis report

Static analysis result for SHA-256 10fb0ba8a9a319a6…

MALICIOUS

PDF

45.8 KB Created: 2020-08-02 11:11:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 123740796930d53e5aac390d5bd6d2a2 SHA-1: 2031da5750cdef44259ab6006d7bdb5a47eddf6a SHA-256: 10fb0ba8a9a319a68786177accce110662410e27976340a5ff2a503e4ca5215a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector infrastructure at 'ttraff.com'. This suggests the document is designed to lead users to malicious sites, likely for phishing or malware distribution. The presence of numerous other links to Shopify-hosted PDFs indicates a potential link farm or SEO manipulation tactic to obscure 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.com/pify?keyword=manual+j+residential+load+calculation
    • http://files.holyfamilypawtucket.org/uploads/1/3/1/6/131606335/fenoxigawew.pdf
    • http://files.uktravelhacking.com/uploads/1/3/1/3/131381605/c83e46c.pdf
    • http://files.simonkennedy.org/uploads/1/3/1/1/131164556/c60e96675eef5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/3802/3581/files/fajabatupivemuzazet.pdf
    • https://cdn.shopify.com/s/files/1/0433/2286/7880/files/86423536898.pdf
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/jobumelovarorezo.pdf
    • https://cdn.shopify.com/s/files/1/0433/7877/0078/files/ttw_load_order.pdf
    • https://cdn.shopify.com/s/files/1/0434/3437/7372/files/dr_cindy_trimm_praying.pdf
    • https://cdn.shopify.com/s/files/1/0432/0778/6654/files/34979871226.pdf
    • https://cdn.shopify.com/s/files/1/0435/4395/3567/files/tugebimosibanijijejufevo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8022/8759/files/hayward_pool_pump_parts_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/8563/4463/files/mikelowelukusoned.pdf
    • https://cdn.shopify.com/s/files/1/0430/8844/5604/files/68361686767.pdf
    • https://cdn.shopify.com/s/files/1/0431/5355/5624/files/75512337445.pdf
    • https://cdn.shopify.com/s/files/1/0428/6208/4262/files/divimanijawukilogigif.pdf
    • https://cdn.shopify.com/s/files/1/0429/6274/7545/files/21028853258.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/669297692.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d03.bin
b671009860ed767eca6c157c9d014b874e6e7dde1923a67f73df067d511f3027		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D03 4896 bytes
font_01_sfnt_off00006db2.bin
a5a546ab08101a2a857dfb1dad94ef11fc994a50c09a234dd95745c4f7b96f31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB2 15060 bytes
font_02_sfnt_off00009c1b.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C1B 4324 bytes

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