Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d6a6c1f7edeb853…

MALICIOUS

PDF

45.4 KB Created: 2020-08-01 14:18:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e6ef825c05ad101b55401ff9c306c59 SHA-1: 2cbfa5a535b81a6ee7960c2c17c511a7e9353b06 SHA-256: 0d6a6c1f7edeb853b02e6c4144669ab41fc66fb334bf53502be99e942d0ec249
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to other PDF files hosted on external sites, forming a link farm. One of the primary links, 'https://ttraff.ru/pify?keyword=longitude+and+latitude+of+new+york', is identified as a malicious redirector. This suggests the document is designed to lure users into clicking through a chain of links, potentially leading to malicious content or further compromise.

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.ru/pify?keyword=longitude+and+latitude+of+new+york
    • http://files.jancancan.com/uploads/1/3/1/4/131406413/sosazidisajawaj-ledosol-vaxodavuv-ziwobedomanefon.pdf
    • http://files.wfgcompass.com/uploads/1/3/2/6/132695571/jirinigefokerazafe.pdf
    • http://files.colegioinglesprimaria.com/uploads/1/3/1/6/131637419/11e9f98aaf8.pdf
    • http://files.ashworkerstraininghub.com/uploads/1/3/1/3/131379054/51e482f047dbc.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/2857609843.pdf
    • https://cdn.shopify.com/s/files/1/0431/8062/1985/files/96104115321.pdf
    • https://cdn.shopify.com/s/files/1/0429/7926/2615/files/89827582198.pdf
    • https://cdn.shopify.com/s/files/1/0434/9139/3698/files/lojifuv.pdf
    • https://cdn.shopify.com/s/files/1/0435/5152/2977/files/sinabosexisug.pdf
    • https://cdn.shopify.com/s/files/1/0434/4302/8120/files/19337349336.pdf
    • https://cdn.shopify.com/s/files/1/0441/1280/6040/files/dedomanawekaderulepogapim.pdf
    • https://cdn.shopify.com/s/files/1/0431/1180/9190/files/after_effects_loop.pdf
    • https://cdn.shopify.com/s/files/1/0431/1190/7488/files/motikakeded.pdf
    • https://cdn.shopify.com/s/files/1/0434/4394/5622/files/fonavifidalezeve.pdf
    • https://cdn.shopify.com/s/files/1/0438/4279/7730/files/rowenta_irons_repair.pdf
    • https://cdn.shopify.com/s/files/1/0434/6429/4557/files/47696452308.pdf
    • https://cdn.shopify.com/s/files/1/0430/0298/6659/files/derarufopim.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_off00005e6a.bin
488135be0c5b3df4819517cc85cdddff5d18d5f0f6e5bd29dcf712f72cc1628f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E6A 5096 bytes
font_01_sfnt_off00006ff5.bin
d46284cac45e352c619720fbbbcc62c4c4a4bb63d1c72f0f4bbb2a8bb901ced6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF5 10260 bytes
font_02_sfnt_off00009347.bin
7ab7f83875b277f70b1312210ffe63283a6f7435da9bf617e9b671e77d4ad89d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9347 16164 bytes

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