Malicious PDF — malware analysis report

Static analysis result for SHA-256 59a8056d0d8689ab…

MALICIOUS

PDF

39.6 KB Created: 2020-09-01 06:42:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 305ff5ee6ca28e92fd6b653ad99671f5 SHA-1: 3dad0cde48fba1b5688aaa82495fc1cf43071afa SHA-256: 59a8056d0d8689ab42556e923411c44b13320edd171805610cdb6c6a9017d04f
152 Risk Score

Malware Insights

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

This PDF file contains numerous embedded links, many of which point to a link farm hosted on cdn.shopify.com, likely for SEO manipulation. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=john+gba+emulator+full', suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains the same redirector URL and a reference to 'John gba emulator full', reinforcing the lure.

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=john+gba+emulator+full
    • https://static.usrfiles.com/ugd/6f53d7_3d42de4099694e85b4bcb59731ed41d0.pdf
    • https://static.usrfiles.com/ugd/b8c837_6366e65a4a3b459eb9fa0198f48752ea.pdf
    • https://static.usrfiles.com/ugd/fd30ac_3e6098b5bd954c7498fc7afee6b06e30.pdf
    • https://cdn.shopify.com/s/files/1/0437/9751/2354/files/19593883817.pdf
    • https://cdn.shopify.com/s/files/1/0432/1899/3320/files/85965849707.pdf
    • https://cdn.shopify.com/s/files/1/0432/9324/5590/files/praise_you_fatboy_slim.pdf
    • https://cdn.shopify.com/s/files/1/0432/7122/5494/files/sogiziromotimofiwok.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/34217075401.pdf
    • https://cdn.shopify.com/s/files/1/0432/6283/6891/files/kasopatilidixukinido.pdf
    • https://cdn.shopify.com/s/files/1/0428/7725/5836/files/46390195454.pdf
    • https://cdn.shopify.com/s/files/1/0436/1289/7437/files/single_variable_calculus_early_transcendentals_8th_edition_reddit.pdf
    • https://cdn.shopify.com/s/files/1/0463/2300/7645/files/determine_plastic_deformation.pdf
    • https://cdn.shopify.com/s/files/1/0427/8022/9791/files/jokoramesamobosotulev.pdf
    • https://cdn.shopify.com/s/files/1/0432/2865/9870/files/tativebutemuzapujijuga.pdf
    • https://cdn.shopify.com/s/files/1/0429/3630/3782/files/kedakexewamejavujujev.pdf
    • https://cdn.shopify.com/s/files/1/0437/0428/7383/files/kubuxuju.pdf
    • https://cdn.shopify.com/s/files/1/0462/3083/1258/files/bed_sheets_online_shopping.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_off00005d7e.bin
7f1898fc1482079e62036a2dee622158ced3d7e92516a3c55965c3c7df73c4ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D7E 5132 bytes
font_01_sfnt_off00006ed2.bin
b18ad786f5e513df9649de87c2b5dfbad1b06942cce57b9e9a9201d93b419280		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6ED2 10128 bytes

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