Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e02485264c8b997…

MALICIOUS

PDF

34.2 KB Created: 2020-08-29 18:25:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 118f7dbb752c9c6970ae4d772da171f7 SHA-1: 433734a0947bd17ca960be058d297aca78d4af58 SHA-256: 0e02485264c8b997d3073577d8ba08b544624819dc14d78a44ed527ffef986b2
154 Risk Score

Malware Insights

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

The PDF contains embedded links, with one identified as a known malicious redirector. The document body, though heavily obfuscated, contains the URL https://ttraff.com/wix?keyword=telurito+de+zinc, which is also listed as a critical heuristic finding. The presence of numerous external PDF links suggests a link farm or redirection strategy, likely to lure users to malicious content or phishing sites.

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/wix?keyword=telurito+de+zinc
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_f1c45884a71143b18055d956689e6f83.pdf
    • https://static.usrfiles.com/ugd/0aab01_157a17a13db1476fa4a21083fac8e751.pdf
    • https://static.usrfiles.com/ugd/33c377_386398a8a463491eb824998a3ccce11c.pdf
    • https://static.usrfiles.com/ugd/b8c837_57857feb91ca481c9a83f02965e15cfc.pdf
    • https://cdn.shopify.com/s/files/1/0434/6734/1981/files/vakalenapiluxavaken.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kaxepetumikikexozifaxu.pdf
    • https://cdn.shopify.com/s/files/1/0438/3752/2085/files/81330860894.pdf
    • https://cdn.shopify.com/s/files/1/0429/2250/8454/files/soul_altar_guide_osrs.pdf
    • https://static.usrfiles.com/ugd/b8c837_66acace23f7948cab8c857045f26fa7b.pdf
    • https://static.usrfiles.com/ugd/b8c837_f56671191947460eb84ea13a712d7700.pdf
    • https://static.usrfiles.com/ugd/b8c837_653b4965d3fb433f8d4c65a45cf23aa2.pdf
    • https://static.usrfiles.com/ugd/b8c837_de08946a9d27462793c77bec0e9c467d.pdf
    • https://static.usrfiles.com/ugd/b8c837_63d90ac156de4c11bdc0aa0bbbf60d20.pdf
    • https://static.usrfiles.com/ugd/b8c837_fcd191c090a4461fa5a54edd0783f4d9.pdf
    • https://static.usrfiles.com/ugd/934fc3_2f70425f72bd4b438c61bf52c31d6038.pdf
    • https://static.usrfiles.com/ugd/b8c837_56b12172fd954cb7be43318321bb1f0c.pdf
    • https://static.usrfiles.com/ugd/b8c837_06205787d8f742418bc3961336617df3.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004abe.bin
fb3db781c979d3cfb8c5cde343f83e8a1349971978076416c8d7082cdd1bdd58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4ABE 4544 bytes
font_01_sfnt_off00005a41.bin
aa35d1de1d1ad2c05bb66ec4b92b4bd263eaeca3703b224395116ea8bdeed235		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A41 9900 bytes

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