Malicious PDF — malware analysis report

Static analysis result for SHA-256 749b2b2ee39e922e…

MALICIOUS

PDF

42.0 KB Created: 2020-09-01 22:28:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0741e3adc0a1de9ce6ca1989c37ed06c SHA-1: ca83d30fb1fe7f810bc3b9dd91e2bbf3ac566c40 SHA-256: 749b2b2ee39e922e67a9b49b1c0a7572fa3b1f25a2572353cc3b5bce5e5a6603
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically 'ttraff.com'. It also exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/wix?keyword=six+sigma+orange+belt+pdf', suggesting a lure to a malicious site disguised as a document download.

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=six+sigma+orange+belt+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/0217/4374/files/excel_template_for_inventory_management.pdf
    • https://cdn.shopify.com/s/files/1/0437/7640/9751/files/definition_of_culture_in_sociology.pdf
    • https://cdn.shopify.com/s/files/1/0461/5520/2723/files/canon_p170-_dh_printing_calculator_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80884551140.pdf
    • https://cdn.shopify.com/s/files/1/0439/0040/3880/files/machinery_s_handbook_1st_edition.pdf
    • https://cdn.shopify.com/s/files/1/0429/8083/5482/files/gumos.pdf
    • https://cdn.shopify.com/s/files/1/0437/7329/6789/files/all_might_wallpaper_android_hd.pdf
    • https://static.usrfiles.com/ugd/a8ca0f_a48b2795de5f4524a1b9716db85661fe.pdf
    • https://static.usrfiles.com/ugd/70c1f8_9458d632af1b4e329cf90a9be0e2848e.pdf
    • https://static.usrfiles.com/ugd/c8a981_5b0a23f7aca544aa8e74a8fea0685543.pdf
    • https://static.usrfiles.com/ugd/943725_7a7d2686cc8d41918246f1027e7c6163.pdf
    • https://static.usrfiles.com/ugd/b8c837_cbe757083e50429b960f23352324eff6.pdf
    • https://static.usrfiles.com/ugd/726ec9_9c00e96bdac64146b9405b39c32f32a3.pdf
    • https://static.usrfiles.com/ugd/b8c837_23bc1e9f24024887a160d64430be2cb8.pdf
    • https://static.usrfiles.com/ugd/91e123_7bc831add6714475ad38592c28d78f86.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_off00006087.bin
49aa71eb564fcda3d89d80789d4b1ef326eae959ea948b977da78db5f448318c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6087 5672 bytes
font_01_sfnt_off000073ba.bin
8b6debe0ee7841928b4794cc9d81198c7bdd7a4b0a4da2849e5e18fe2aca54b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73BA 12076 bytes

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