Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d9cd9b9bd9a465f…

MALICIOUS

PDF

46.9 KB Created: 2020-08-30 08:02:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e7e07b69b1067e9c5e7e11980ffb0c80 SHA-1: 320bb8fb1fc9cf0e8492c3206b0e61a51f2a4774 SHA-256: 6d9cd9b9bd9a465f76185cbcdfdd1bfffc3f07b27750db7f307ccb6d77e97a9b
154 Risk Score

Malware Insights

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

The PDF contains a deceptive title and embeds a link to a known malicious redirector, ttraff.cc. This suggests the document is part of a phishing or malware distribution campaign, likely using spearphishing as an initial access vector. The presence of numerous other links, many pointing to benign Shopify URLs, indicates a potential link farm or SEO manipulation tactic to obscure the malicious destination.

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.cc/wix?keyword=idiot%252527s+guide+to+clowning
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0436/1990/9794/files/72019217836.pdf
    • https://cdn.shopify.com/s/files/1/0431/6551/5933/files/definition_of_antepartum_haemorrhage.pdf
    • https://cdn.shopify.com/s/files/1/0440/8436/3416/files/libro_de_armando_hoyos_descargar.pdf
    • https://cdn.shopify.com/s/files/1/0449/8125/6360/files/12499771168.pdf
    • https://cdn.shopify.com/s/files/1/0430/7451/9194/files/24261666475.pdf
    • https://cdn.shopify.com/s/files/1/0431/4333/2000/files/natokarinazodofi.pdf
    • https://cdn.shopify.com/s/files/1/0432/8148/1884/files/43545421199.pdf
    • https://static.usrfiles.com/ugd/eaf48f_fa2d7c810aa5412fa661c46a60f76e5f.pdf
    • https://static.usrfiles.com/ugd/04e6f9_098cfec8f4aa43a8a64e57b7549b74ea.pdf
    • https://static.usrfiles.com/ugd/b8c837_6ca6542135bd4338936826dc674c0e5c.pdf
    • https://static.usrfiles.com/ugd/b8c837_d32996d0bfbd46f9bb88b303c60f149d.pdf
    • https://cdn.shopify.com/s/files/1/0434/7314/1912/files/65799174358.pdf
    • https://cdn.shopify.com/s/files/1/0430/7822/1973/files/2019_pre_answer_key_upsc.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d44.bin
845e122f7774037c4c0da26f4f064ae604d5cf6633668a54c0b7f4fc99056957		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D44 4864 bytes
font_01_sfnt_off00006df8.bin
daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DF8 1800 bytes
font_02_sfnt_off00007686.bin
a855d2386e2e05e533a9d6120a461a1e50cb0d88a4cb8085e4538f6a4de96013		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7686 10128 bytes
font_03_sfnt_off00009965.bin
6a435b3896ddcd79d4a1654faec39833a1e091b8139a10f4c5bc3bd74b9b9cd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9965 16092 bytes

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