Malicious PDF — malware analysis report

Static analysis result for SHA-256 64edf3a06915e09a…

MALICIOUS

PDF

44.0 KB Created: 2020-08-30 17:17:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91a17690ef0bab1a31552064a053f6db SHA-1: eb814441bc2dd88c61cd93bde4c119dabdf01953 SHA-256: 64edf3a06915e09aebb6ced70f5c0d44ec1254de74f93daa4241ff0a0c3a4830
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous embedded links, with a critical heuristic identifying it as a redirector link and a PDF SEO link farm. The primary malicious URL, 'https://ttraff.ru/wix?keyword=hallelujah+jeff+buckley+paroles+traduction', is flagged as malicious. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users to malicious content.

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/wix?keyword=hallelujah+jeff+buckley+paroles+traduction
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_6aecc89c16794de0bd20c4facf33b5aa.pdf
    • https://static.usrfiles.com/ugd/74a852_2f5b0438cab2448cad8631bfe8639e76.pdf
    • https://static.usrfiles.com/ugd/a2e20a_7d45226996534fb195c1fedf0f544659.pdf
    • https://static.usrfiles.com/ugd/1f2646_6c8945de20dd4d5da5bb24bbc87d7166.pdf
    • https://static.usrfiles.com/ugd/0d2908_707bb4667168489889eba22e71cfb3dc.pdf
    • https://static.usrfiles.com/ugd/3649d2_6451e11cb5b34ffca3b96deddd91e42f.pdf
    • https://static.usrfiles.com/ugd/b8c837_ee156484cb8940ff8acfb0f0c7cf1a97.pdf
    • https://static.usrfiles.com/ugd/b8c837_45aaa70368c748eabbcd910d550aa9b3.pdf
    • https://static.usrfiles.com/ugd/9e14ca_cda0c71323b947809a299d1dc9d7b60e.pdf
    • https://static.usrfiles.com/ugd/299074_f95ba2bed9ff44718176b7578cb786f1.pdf
    • https://static.usrfiles.com/ugd/b8c837_1bf73c9469a149e29844297101e16ec4.pdf
    • https://static.usrfiles.com/ugd/b85eb0_5402a72626f340fabe7ef8e146bdcd8d.pdf
    • https://cdn.shopify.com/s/files/1/0441/1647/6056/files/uji_statistik_non_parametrik.pdf
    • https://cdn.shopify.com/s/files/1/0434/0993/2439/files/skyrim_geirmund_s_hall_puzzle_answer.pdf
    • https://cdn.shopify.com/s/files/1/0432/3010/1668/files/gojadezaxibegipasopeke.pdf
    • https://cdn.shopify.com/s/files/1/0428/5808/6559/files/48541865124.pdf
    • https://cdn.shopify.com/s/files/1/0427/7128/4135/files/mesuzu.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_off00006944.bin
dacc06f1f1c2fb050677dc9540982015723d500492dac6d06f26ee48e60971d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6944 5584 bytes
font_01_sfnt_off00007c3a.bin
eab7a75231bc09690a6a3e592b44ea10015556a9895feae635aecd07505ac461		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C3A 11520 bytes

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