Malicious PDF — malware analysis report

Static analysis result for SHA-256 63ea4ab2009dfa3e…

MALICIOUS

PDF

40.4 KB Created: 2020-08-31 19:29:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: af06d947795ea0355053e487787b36da SHA-1: 06d8815fcd1bdeb21d1084a0421ea3b34ce898fc SHA-256: 63ea4ab2009dfa3e3269c1143bfc35328cceb2a080f138bf5a8696a832c494fc
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged as malicious by an ML classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. It also features a large number of external links, many hosted on Shopify, suggesting a link farm or SEO abuse tactic. The primary malicious URL identified is ttraff.com, which is likely used to redirect users to further 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.com/wix?keyword=revenue+land+reforms+department+bihar
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0427/5165/6102/files/plant_systematics_a_phylogenetic_approach_third_edition.pdf
    • https://cdn.shopify.com/s/files/1/0438/4368/2469/files/duzimuk.pdf
    • https://cdn.shopify.com/s/files/1/0434/2464/5272/files/58481409009.pdf
    • https://cdn.shopify.com/s/files/1/0437/6464/6049/files/91299498902.pdf
    • https://cdn.shopify.com/s/files/1/0458/5589/9801/files/xobisax.pdf
    • https://cdn.shopify.com/s/files/1/0433/4724/7263/files/swayamvara_parvathi_mantra.pdf
    • https://cdn.shopify.com/s/files/1/0435/1252/9055/files/free_html_templates_for_websites_sim.pdf
    • https://cdn.shopify.com/s/files/1/0434/9735/7472/files/xodavomotexafolisepud.pdf
    • https://cdn.shopify.com/s/files/1/0433/1647/8110/files/21939351074.pdf
    • https://cdn.shopify.com/s/files/1/0431/3615/5809/files/drug_resistant_malaria.pdf
    • https://cdn.shopify.com/s/files/1/0437/7152/7330/files/pizegisazuzukavebukopi.pdf
    • https://cdn.shopify.com/s/files/1/0430/1602/8309/files/temutujarojebenamuteniwe.pdf
    • https://cdn.shopify.com/s/files/1/0432/6631/0299/files/windows_10_pro_32-_bit_64-_bit.pdf
    • https://cdn.shopify.com/s/files/1/0431/3966/1986/files/xifogerimolaloxonador.pdf
    • https://cdn.shopify.com/s/files/1/0439/2691/3179/files/bihar_board_model_paper_2020_12th_science_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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a62.bin
2fff6d09ec75531b47a4c31f80b33b993f5008c844b35fa6aea86d0fd069e3e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A62 5488 bytes
font_01_sfnt_off00005ce6.bin
a8b9d6bab03da55feb31c72851e56c9da73f0c889dad7ba8ee50023a94a5bc89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CE6 10048 bytes
font_02_sfnt_off00007f68.bin
e296a61d2d303e35be9e1a35631556663d2780498efa7e8f3867bf557f172fe6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F68 16164 bytes

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