Malicious PDF — malware analysis report

Static analysis result for SHA-256 10712951a43131f9…

MALICIOUS

PDF

46.5 KB Created: 2020-08-30 19:23:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80512ac35452d910f479066d679c19cc SHA-1: 5c9ab0289234e87065c17ed7cc8e7e0d4a2f046f SHA-256: 10712951a43131f956b01dd4e89b205f636afb6379be6478c9e06df571ebeccc
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which points to a known malicious redirector infrastructure. The document body, though heavily obfuscated, appears to contain text related to an online game, likely serving as a lure. The presence of numerous Shopify-hosted PDF links suggests a link farm or SEO poisoning attempt to distribute malicious content.

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/wix?keyword=revelation+online+swordmage+dps+build
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/4433/8838/files/51366267842.pdf
    • https://cdn.shopify.com/s/files/1/0438/9902/7611/files/26146288833.pdf
    • https://cdn.shopify.com/s/files/1/0438/2231/7730/files/fubin.pdf
    • https://cdn.shopify.com/s/files/1/0433/8951/7973/files/36851875464.pdf
    • https://cdn.shopify.com/s/files/1/0438/0668/7394/files/vijusumenizuzaretubixi.pdf
    • https://cdn.shopify.com/s/files/1/0440/1568/1701/files/travel_brochure_examples_for_students.pdf
    • https://cdn.shopify.com/s/files/1/0441/1500/1496/files/joining_report_letter_template.pdf
    • https://cdn.shopify.com/s/files/1/0440/1194/6134/files/16950237927.pdf
    • https://cdn.shopify.com/s/files/1/0430/3077/3913/files/kiwutesuta.pdf
    • https://static.usrfiles.com/ugd/451461_9c9dd8c4bf814412b912eae67ec31273.pdf
    • https://static.usrfiles.com/ugd/921909_55a9f82030a14d3797d676fff0d7c8ca.pdf
    • https://static.usrfiles.com/ugd/760101_d6d94dde1a074ab1b93b3442acd16f1e.pdf
    • https://static.usrfiles.com/ugd/865d50_f486d3f525784faabb2b8fa7f7913598.pdf
    • https://static.usrfiles.com/ugd/b8c837_84f8ae46630a4b688afbf3f941bb323a.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_off00006003.bin
527fde38cabf2112f2d4c2b47aaaeab28985417339e5118337b021bcc7031736		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6003 5576 bytes
font_01_sfnt_off000072f8.bin
4bc351e94966ca8e4e9b8b1479fc003b64e50a86c919e24395226a0706d360aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72F8 10092 bytes
font_02_sfnt_off000095d4.bin
ed614ff3ac2e387b3dffe3adc8533a73dd514e171fc201cb60d70b5b5a32e0ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95D4 16196 bytes

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