Malicious PDF — malware analysis report

Static analysis result for SHA-256 0069bd5fba403878…

MALICIOUS

PDF

45.4 KB Created: 2020-09-01 23:02:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b4a71d1276636492e78c41d8d98b0a10 SHA-1: 772b58bbfd4571e5d0840288443b189c4261e152 SHA-256: 0069bd5fba403878cf942d53d8edd02a5e03fad237ec629b3e34622a0b57d694
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL and text related to sheet music, suggesting a lure. The presence of numerous other Shopify links indicates a link farm strategy, likely 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.com/wix?keyword=bohemian+rhapsody+sheet+music+violin
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/9494/1603/files/boy_in_the_striped_pajamas_summary.pdf
    • https://cdn.shopify.com/s/files/1/0433/0346/9221/files/46645430812.pdf
    • https://cdn.shopify.com/s/files/1/0431/3723/7146/files/kigususojitofigidavex.pdf
    • https://cdn.shopify.com/s/files/1/0430/3277/2757/files/estados_financieros_primarios_y_secundarios.pdf
    • https://cdn.shopify.com/s/files/1/0431/8383/3249/files/7431883214.pdf
    • https://cdn.shopify.com/s/files/1/0429/1421/8143/files/jurnal_patent_ductus_arteriosus.pdf
    • https://cdn.shopify.com/s/files/1/0432/0896/6306/files/lawudi.pdf
    • https://cdn.shopify.com/s/files/1/0431/9503/9905/files/riwakev.pdf
    • https://cdn.shopify.com/s/files/1/0428/2508/9191/files/76979645648.pdf
    • https://cdn.shopify.com/s/files/1/0432/7663/2217/files/almera_n16_workshop_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/4000/4501/files/pebumilevugofinedatepolu.pdf
    • https://cdn.shopify.com/s/files/1/0435/5761/7823/files/peruletevi.pdf
    • https://static.usrfiles.com/ugd/73f3b0_da0f132683134e9aa943adb773a2e452.pdf
    • https://static.usrfiles.com/ugd/b8c837_b88a168183e74e4495651ea79352d3bc.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_off000064dd.bin
ee9bcf4bc8b633decf3c5dd04cf2d746a39fb4bc0090074c107a80de38050a17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64DD 5408 bytes
font_01_sfnt_off00007719.bin
10c2c8022f6621d72aa11f440afbe1276e76f6f0708b9daea3658636cb6bb4dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7719 10324 bytes
font_02_sfnt_off00009a7f.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A7F 4324 bytes

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