Malicious PDF — malware analysis report

Static analysis result for SHA-256 14225c8152adce7b…

MALICIOUS

PDF

42.1 KB Created: 2020-08-29 19:23:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8171616cba7dd3f003904b8f46f7ed81 SHA-1: a2774333475361c25f1962b1af05c97ccee76274 SHA-256: 14225c8152adce7ba2f8064f7c6bbf85f58aec9566a75e2c239a60ae2f5dc4c1
162 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to host or distribute malware. The document body also contains a call-to-action phrase, suggesting a lure to trick users into clicking the malicious link. The presence of a PDF link farm further indicates an attempt to manipulate search engine results or distribute content through multiple, potentially malicious, links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.cc/wix?keyword=gx+works+2+software+download
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/9562/1796/files/55978110493.pdf
    • https://cdn.shopify.com/s/files/1/0428/6801/5260/files/74950364128.pdf
    • https://cdn.shopify.com/s/files/1/0430/8254/7361/files/pokemon_adventure_games_apk.pdf
    • https://cdn.shopify.com/s/files/1/0433/4790/2629/files/skullcandy_hesh_2_charging_instructions.pdf
    • https://cdn.shopify.com/s/files/1/0436/4759/8742/files/goduwafede.pdf
    • https://cdn.shopify.com/s/files/1/0434/2933/1100/files/jozogedabarunubido.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/64630415929.pdf
    • https://cdn.shopify.com/s/files/1/0427/6387/8566/files/pevawomadozunuluwug.pdf
    • https://cdn.shopify.com/s/files/1/0431/5653/7505/files/don_giovanni_overture.pdf
    • https://cdn.shopify.com/s/files/1/0437/1942/6198/files/ectomycorrhizae_and_endomycorrhizae.pdf
    • https://cdn.shopify.com/s/files/1/0432/9593/2584/files/fituletoxemuxekudizen.pdf
    • https://cdn.shopify.com/s/files/1/0432/9350/7739/files/73606634000.pdf
    • https://cdn.shopify.com/s/files/1/0430/1458/6517/files/33461843262.pdf
    • https://cdn.shopify.com/s/files/1/0459/5839/8111/files/job_joining_confirmation_email_format.pdf
    • https://cdn.shopify.com/s/files/1/0429/5085/2762/files/certified_ethical_hacking_study_guide.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_off00005822.bin
609144a5b1721807990dc60ff9fc2d01a11eab962f78c6caf5788ff20805b9b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5822 5288 bytes
font_01_sfnt_off00006a4a.bin
80f00958a2a2d32bdfeef7f7333606cc655db79b68ee55e55ff8d622be611e96		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A4A 16260 bytes

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