Malicious PDF — malware analysis report

Static analysis result for SHA-256 69054b71721a108d…

MALICIOUS

PDF

44.4 KB Created: 2020-08-10 18:24:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b349dc05cf82d0fae3679e9324a0deb9 SHA-1: d2b5fcec09f61b1e917b761ddc7dcf0f278c9ccc SHA-256: 69054b71721a108d7dacbad2c88ba56f5efe0f5b0bf2988b0fb3314dcc54b259
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, directing users to 'ttraff.com'. Additionally, it features a large number of embedded links to other PDFs, likely for SEO manipulation or to obscure malicious intent. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious activity.

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/pify?keyword=amendments+summary+pdf
    • http://files.professionalcapitalpartners.com/uploads/1/3/1/4/131438766/4121815.pdf
    • http://bexevaka.warriorschnauzers.com/uploads/1/3/0/8/130874493/bodanelexijejudije.pdf
    • http://files.yogaforstressandanxiety.com/uploads/1/3/1/4/131454306/jukaxovemekegib_lakigon.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0438/0105/1293/files/b._l._theraja_a_textbook_of_electrical_technology.pdf
    • https://cdn.shopify.com/s/files/1/0453/4947/0363/files/el_neoliberalismo_en_colombia.pdf
    • https://cdn.shopify.com/s/files/1/0431/5624/2589/files/ap_transco_ae_syllabus.pdf
    • https://cdn.shopify.com/s/files/1/0428/0533/0083/files/90780784084.pdf
    • https://cdn.shopify.com/s/files/1/0432/0319/9138/files/rumufowukagepabuli.pdf
    • https://cdn.shopify.com/s/files/1/0431/7488/7573/files/51491043455.pdf
    • https://cdn.shopify.com/s/files/1/0437/6068/1109/files/kigekikazezitodagi.pdf
    • https://cdn.shopify.com/s/files/1/0430/5692/2777/files/60376677109.pdf
    • https://cdn.shopify.com/s/files/1/0450/3647/0430/files/list_of_german_adjectives_a_z.pdf
    • https://cdn.shopify.com/s/files/1/0433/0058/5625/files/persona_q_rom.pdf
    • https://cdn.shopify.com/s/files/1/0434/1720/6949/files/zixafuxiz.pdf
    • https://cdn.shopify.com/s/files/1/0430/0324/8803/files/iti_engineering_drawing_download.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_off00006346.bin
9a230d14c08c019544cc171eaf9f6c1d3c136cf0c012b6be93f372f2f875100c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6346 4968 bytes
font_01_sfnt_off00007404.bin
9ad1fdb18aa45954c4dd9e14b1e5cdb9faae01290152c252885ebf9bf1933b99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7404 10336 bytes
font_02_sfnt_off000096ca.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96CA 4324 bytes

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