Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f673d2ea510160b…

MALICIOUS

PDF

55.9 KB Created: 2020-09-08 15:02:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e52e3bc51f8fee0e585ab6ca76c50b05 SHA-1: b217fef3528beaf778b2a5cd2789d913594a9c4d SHA-256: 4f673d2ea510160be310f496e4a5a0994668274bea9c327519025e2475f84e9f
154 Risk Score

Malware Insights

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

This PDF file contains numerous links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.me/wix?keyword=set+date+format+in+bootstrap+datepicker'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure. No scripts were extracted, limiting the analysis of further execution chains.

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.me/wix?keyword=set+date+format+in+bootstrap+datepicker
    • https://cdn.shopify.com/s/files/1/0430/1848/5923/files/bailando_song_mp4_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/3037/1738/files/carpal_tunnel_exercises_post_surgery.pdf
    • https://cdn.shopify.com/s/files/1/0434/0246/1351/files/tarutedujevorakamu.pdf
    • https://cdn.shopify.com/s/files/1/0435/5827/3183/files/madasokojesorawun.pdf
    • https://cdn.shopify.com/s/files/1/0427/9864/5404/files/83849725293.pdf
    • https://cdn.shopify.com/s/files/1/0429/7365/9290/files/nupaseroveravoge.pdf
    • https://cdn.shopify.com/s/files/1/0435/2809/3856/files/75259622459.pdf
    • https://cdn.shopify.com/s/files/1/0437/0599/1321/files/handbell_choir_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0438/2890/4093/files/zixowefel.pdf
    • https://cdn.shopify.com/s/files/1/0431/4375/7985/files/doruxoluwizuwemajujoxotox.pdf
    • https://cdn.shopify.com/s/files/1/0435/5280/0929/files/ssh_speed_test.pdf
    • https://cdn.shopify.com/s/files/1/0435/5221/1099/files/57626249404.pdf
    • https://cdn.shopify.com/s/files/1/0433/1077/6478/files/realidades_2_capitulo_1a_answers_pg_5.pdf
    • https://static.usrfiles.com/ugd/440e29_a4a4f54d4884413e9c815099d1849b71.pdf
    • https://static.usrfiles.com/ugd/f65175_3b41c727c0724e4d9f6674704da5dd1e.pdf
    • https://static.usrfiles.com/ugd/b8c837_65e00add5f7e4f819b732a07367ea238.pdf
    • https://static.usrfiles.com/ugd/3bcfef_3c5c1c86759944bc8cb3f33e8813c7a9.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_off00008d7c.bin
5e987d2bd38d34fc95f990e99a6a35c9a24048e3cb9662f8973195d73df610ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D7C 5576 bytes
font_01_sfnt_off0000a05d.bin
75bf2245977192503b2229d494b044faa8ff90e451a375aad3031c3c1cb21a37		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA05D 14856 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.