Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0cdbb25aee3c59d…

MALICIOUS

PDF

37.4 KB Created: 2020-08-12 10:40:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d0de747451c276e0cfebf806bd408ba1 SHA-1: f6a00444894cb1832aa84e4b98e819b73db49597 SHA-256: d0cdbb25aee3c59df59a9a321683b07315339560750d05949a468a4dd6b895ea
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain, ttraff.com. This indicates a phishing or redirection attempt, likely to deliver a secondary payload or lead users to a fraudulent site. The ML classifier strongly supports the malicious nature of this PDF.

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=abeka+phonics+charts+pdf
    • http://files.lutoncentralmosque.org/uploads/1/3/1/4/131454109/6908927.pdf
    • http://files.ermineskincommunity.ca/uploads/1/3/0/7/130740249/vunopurunoson.pdf
    • http://files.rayoflightwitness.com/uploads/1/3/1/6/131637385/pafazodogore_nuzalu_xogusekotet_kusupez.pdf
    • https://cdn.shopify.com/s/files/1/0429/6785/9359/files/92320603660.pdf
    • https://cdn.shopify.com/s/files/1/0432/0192/1184/files/annex_18.pdf
    • https://cdn.shopify.com/s/files/1/0434/4463/3750/files/wow_f2p_guide_2017.pdf
    • https://cdn.shopify.com/s/files/1/0429/9862/8501/files/juzoderinaguj.pdf
    • https://cdn.shopify.com/s/files/1/0436/6509/6857/files/gedobuzatepimegitove.pdf
    • https://cdn.shopify.com/s/files/1/0432/7093/0600/files/mibuj.pdf
    • https://cdn.shopify.com/s/files/1/0437/1654/2632/files/diccionario_psicologia_dorsch.pdf
    • https://cdn.shopify.com/s/files/1/0433/5294/8901/files/16710118125.pdf
    • https://cdn.shopify.com/s/files/1/0440/9032/7205/files/human_body_anatomy_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61047377128.pdf
    • https://cdn.shopify.com/s/files/1/0433/3341/9166/files/mystery_skulls_album.pdf
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/91937361079.pdf
    • https://cdn.shopify.com/s/files/1/0429/8709/4177/files/differential_and_integral_calculus_book.pdf
    • https://cdn.shopify.com/s/files/1/0429/5085/2762/files/24282689979.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_off000055f4.bin
262c029717fd11d2af8cedd457f0ddd38e3fb407e0acdabbeda716b0c0c72763
pdf-font-stream PDF embedded font (sfnt) at offset 0x55F4 5404 bytes
font_01_sfnt_off00006841.bin
8960a33669c910f40adc94b1ac77bb51fd9c59030d5d54d8b2df68bfbf288ec8
pdf-font-stream PDF embedded font (sfnt) at offset 0x6841 9540 bytes