Malicious PDF — malware analysis report

Static analysis result for SHA-256 57ebf69c8e0e08d2…

MALICIOUS

PDF

48.8 KB Created: 2020-08-07 23:09:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dee4339205630d0c07d676460875b8a1 SHA-1: eec92063a381430dbc163ff4749a42dca47f7f5d SHA-256: 57ebf69c8e0e08d252d0f835ffdf4fb073d76543f30a8d20fccf3a3066dabf3b
152 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a known malicious redirector, ttraff.com, which is designed to lure users to further malicious content. The document body, though heavily obfuscated, contains the URL and keywords suggesting a lure related to 'lactogenic foods pdf'. The presence of a mass external PDF link farm further indicates a malicious intent to distribute content through deceptive means.

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=lactogenic+foods+pdf
    • http://lalamagu.cier-cla.com/uploads/1/3/1/6/131637254/lanomuzir.pdf
    • http://kelorevu.indianamainecoons.com/uploads/1/3/2/7/132740405/7088138.pdf
    • http://votana.grahamsoutheast.com/uploads/1/3/0/8/130814017/lapudidawizetu.pdf
    • http://tibadep.bellaholisticsskin.com/uploads/1/3/0/7/130775403/d354350a56.pdf
    • http://files.obiefranklin.com/uploads/1/3/0/8/130874585/df42b61c82a02c9.pdf
    • https://cdn.shopify.com/s/files/1/0429/5216/3481/files/13083381562.pdf
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/78633740144.pdf
    • https://cdn.shopify.com/s/files/1/0438/5010/4982/files/91077283762.pdf
    • https://cdn.shopify.com/s/files/1/0434/0052/8033/files/81233323779.pdf
    • https://cdn.shopify.com/s/files/1/0432/8089/2057/files/fomogipipu.pdf
    • https://cdn.shopify.com/s/files/1/0439/5125/9803/files/batching_plant_maintenance.pdf
    • https://cdn.shopify.com/s/files/1/0429/5265/5002/files/73630890131.pdf
    • https://cdn.shopify.com/s/files/1/0432/0670/5311/files/learn_malayalam_through_english_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/7511/6964/files/great_man_leadership_theory.pdf
    • https://cdn.shopify.com/s/files/1/0432/6011/7160/files/valez.pdf
    • https://cdn.shopify.com/s/files/1/0434/5357/9430/files/nilobojejizinuweti.pdf
    • https://cdn.shopify.com/s/files/1/0436/1145/5645/files/ridawudigefifilum.pdf
    • https://cdn.shopify.com/s/files/1/0429/9964/4314/files/sierra_reloading_manual.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/
    • https://cdn.shopify.com/s/files/1/0432/0670/5

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000082c0.bin
c67279d50d92759e647c986814e1600edd4421b191a5398131e622cfb93bc1d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82C0 5136 bytes
font_01_sfnt_off00009456.bin
3561932e42bbad1ec821b670939baadc6e698a76c4bfd02e274e672acd2eacc2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9456 9892 bytes

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