Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cca603f2007fb24…

MALICIOUS

PDF

42.4 KB Created: 2020-08-21 11:23:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a546f95a8eef211649e9e37bd5da229 SHA-1: d81b8504bd4f12b6b073ef6989f832603b34a2a2 SHA-256: 5cca603f2007fb24869813f301e387a0e3e79437504be01561692a725542784c
154 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to Shopify-hosted PDFs, likely as part of a link farm. One critical heuristic identified a link to a known malicious redirector, https://ttraff.com/pify?keyword=arms+race+mod+manual, which is designed to obscure the final destination. The document's structure and the presence of numerous external links suggest an attempt to manipulate search engine results or distribute malicious content indirectly.

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=arms+race+mod+manual
    • http://torunoz.vickiwhitethesciencelady.com/uploads/1/3/0/8/130813848/4503010.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/2956/0481/files/minenulumuberobav.pdf
    • https://cdn.shopify.com/s/files/1/0430/9889/8592/files/77355736721.pdf
    • https://cdn.shopify.com/s/files/1/0431/7764/0093/files/depumemirotarisewo.pdf
    • https://cdn.shopify.com/s/files/1/0430/5649/6791/files/lidosezeravuno.pdf
    • https://cdn.shopify.com/s/files/1/0430/3486/9921/files/scheme_of_work_template.pdf
    • https://cdn.shopify.com/s/files/1/0434/7143/7984/files/49564757748.pdf
    • https://cdn.shopify.com/s/files/1/0434/0203/5351/files/92558228198.pdf
    • https://cdn.shopify.com/s/files/1/0434/6436/0100/files/pifinevumuxazewomasu.pdf
    • https://cdn.shopify.com/s/files/1/0434/3575/3639/files/inspection_and_test_plan_template_concrete.pdf
    • https://cdn.shopify.com/s/files/1/0434/7723/7920/files/70580582094.pdf
    • https://cdn.shopify.com/s/files/1/0429/2398/3004/files/anza_borrego_state_park_map.pdf
    • https://cdn.shopify.com/s/files/1/0461/6755/6259/files/17434748634.pdf
    • https://cdn.shopify.com/s/files/1/0429/1536/5031/files/wurupikofogulazikuv.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063a3.bin
767e8b84ed774d8aa145161a795d2f941407ac1b56f4919d78657813aa1c30a7
pdf-font-stream PDF embedded font (sfnt) at offset 0x63A3 5072 bytes
font_01_sfnt_off000074b5.bin
2fdd1da5fd6cc50c71f0dcfe0771ae860ebd3a1f7f628763fb133df17271eace
pdf-font-stream PDF embedded font (sfnt) at offset 0x74B5 11980 bytes