Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2827e62d47e27ef…

MALICIOUS

PDF

45.7 KB Created: 2020-08-21 08:40:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e0b49ad4132eeb04f5a25e4f6fa23f25 SHA-1: d9edb9de92f57ebe9420669a212e303dd0ac060e SHA-256: a2827e62d47e27ef6ae40c7cf12ff66c17912475d106851583776def6fe8cd57
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link to a known malicious redirector, ttraff.cc, which is likely used to host or redirect to further malicious content. The document body, though malformed, contains the same URL and keywords suggesting a lure. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm designed to manipulate search engine results, a common tactic for distributing malicious documents.

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.cc/pify?keyword=html+script+x-+template
    • http://files.hamtramckpestcontrol.com/uploads/1/3/1/6/131606118/76380ce.pdf
    • http://files.shilohuccyorkpa.org/uploads/1/3/0/8/130814714/1386092.pdf
    • http://mifadosox.bridgeofmusic.org/uploads/1/3/1/0/131070197/rowenenunugaw-xixexibegotijo-towojejefemulud-lebix.pdf
    • http://files.bougeoirmagazine.com/uploads/1/3/1/4/131437941/jimivijozi.pdf
    • http://rasup.wisconsinwaterlaw.com/uploads/1/3/1/4/131409236/lijugamukuluduwaw.pdf
    • https://cdn.shopify.com/s/files/1/0433/8286/6083/files/34811236978.pdf
    • https://cdn.shopify.com/s/files/1/0431/2779/9957/files/aviation_security_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/7488/7573/files/bericht_schreiben_beispiel.pdf
    • https://cdn.shopify.com/s/files/1/0434/4925/4041/files/jebemovepewopopuradokod.pdf
    • https://cdn.shopify.com/s/files/1/0430/3798/2869/files/47315662332.pdf
    • https://cdn.shopify.com/s/files/1/0437/5350/4917/files/navigation_using_google_maps_android_api_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nasodidupafulad.pdf
    • https://cdn.shopify.com/s/files/1/0431/1338/2044/files/30420475046.pdf
    • https://cdn.shopify.com/s/files/1/0428/5582/5567/files/anatomy_and_physiology_of_eye_book.pdf
    • https://cdn.shopify.com/s/files/1/0434/1104/6558/files/jupyter_run_cell_shortcut.pdf
    • https://cdn.shopify.com/s/files/1/0431/5440/7578/files/.pdf
    • https://cdn.shopify.com/s/files/1/0439/2353/8088/files/baby_laughing_music.pdf
    • https://cdn.shopify.com/s/files/1/0432/9255/7462/files/43220417062.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_off00006760.bin
934ee6f017c057613017509bf5cc2ba8c1f490f67e362fd2f553277dc32ecc75		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6760 5140 bytes
font_01_sfnt_off000078c4.bin
96aca7e7092198113ac8f888a7854fb2cc208a1a3e2493c21d4581bb2478109e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78C4 15764 bytes

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