Malicious PDF — malware analysis report

Static analysis result for SHA-256 30ac47eba35a3c70…

MALICIOUS

PDF

41.5 KB Created: 2020-08-29 21:48:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d18867f83fab3227e6fb510fb6f878d3 SHA-1: b0ee7ccdca341dea0b1463946ab088c3f44a0ad6 SHA-256: 30ac47eba35a3c70b523d9d4badb7fc012e56aff7246978eabe33de45c488fd6
152 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'. Additionally, it exhibits characteristics of a PDF link farm, embedding 19 external PDF links, many hosted on Shopify, likely for SEO manipulation. The document body, though heavily obfuscated, contains the redirector URL and a benign-looking PDF title, suggesting a lure to a malicious site.

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=turbo+charged+prelude+online+free+mo
    • https://cdn.shopify.com/s/files/1/0433/6189/4565/files/conjunction_exercises_with_answers_grade_7.pdf
    • https://cdn.shopify.com/s/files/1/0430/5692/2777/files/lixafedudefazase.pdf
    • https://cdn.shopify.com/s/files/1/0439/8222/5566/files/qasidah_burdah_imam_busiri.pdf
    • https://cdn.shopify.com/s/files/1/0428/7142/3135/files/wamobesozi.pdf
    • https://cdn.shopify.com/s/files/1/0434/8621/6344/files/54553832564.pdf
    • https://cdn.shopify.com/s/files/1/0435/2681/5903/files/materi_akuntansi_perusahaan_jasa_lengkap.pdf
    • https://cdn.shopify.com/s/files/1/0432/5965/8398/files/amablesser_mlindo_the_vocalist_video.pdf
    • https://cdn.shopify.com/s/files/1/0432/8210/4478/files/netflix_font_generator.pdf
    • https://cdn.shopify.com/s/files/1/0432/1912/4382/files/taromesikajekugad.pdf
    • https://cdn.shopify.com/s/files/1/0431/4667/4336/files/mahalaxmi_calendar_september_2019_marathi.pdf
    • https://cdn.shopify.com/s/files/1/0434/6914/4230/files/lirabebaximal.pdf
    • https://cdn.shopify.com/s/files/1/0429/1395/6007/files/asphalt_nitro_8_game_for_pc.pdf
    • https://cdn.shopify.com/s/files/1/0432/4212/7527/files/76389516455.pdf
    • https://cdn.shopify.com/s/files/1/0461/0903/2612/files/accidents_reported_in_nj.pdf
    • https://static.usrfiles.com/ugd/ae15ca_ef9889abfbd44122862f879281671dc3.pdf
    • https://static.usrfiles.com/ugd/b8c837_fb15d351860a42d19f832bd1fd6d34d4.pdf
    • https://static.usrfiles.com/ugd/12f4eb_da1df472ef294e42bac024b325a0841a.pdf
    • https://static.usrfiles.com/ugd/b8c837_39f5b171722548ff9983643edcae0a0e.pdf
    • https://static.usrfiles.com/ugd/b8c837_70961a14e05f4d12a2d9443d7faf2da3.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006268.bin
1b25c3ab7e12ada423c6acef7add3776d856525164d58f138aeb089390197f1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6268 5480 bytes
font_01_sfnt_off000074d7.bin
58e88f6a4c086aaa3accd53e021a8eee81c72346667ef91d0628dcedbb9a47f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74D7 10496 bytes

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