Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c637ba294986421…

MALICIOUS

PDF

40.7 KB Created: 2020-08-29 04:03:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9a69b7fb995343554281878d8eeef439 SHA-1: 19bbc17ff038c6f599e7384dc753fbbc413373c7 SHA-256: 7c637ba294986421e99a51cfbdcfbe7533c0b10890ece79c4ff2715ee94e2092
154 Risk Score

Malware Insights

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

This PDF file contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The primary malicious URL is https://ttraff.me/wix?keyword=planeacion+estrategica+de+la+gestion. The document body itself is heavily obfuscated and appears to be generated content, reinforcing the malicious intent of the embedded links.

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=planeacion+estrategica+de+la+gestion
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_9984b42ff7c04735a62bdf43673d3922.pdf
    • https://static.usrfiles.com/ugd/b8c837_c3ae09e087aa487a9991ec7759c3ef61.pdf
    • https://static.usrfiles.com/ugd/b8c837_75215d55ffe24d41beb6b5705f61ffa5.pdf
    • https://static.usrfiles.com/ugd/b8c837_438e1362bc0744e18a14f7939ea4c637.pdf
    • https://static.usrfiles.com/ugd/b8c837_d782272e28024ae292070558a03b5d79.pdf
    • https://static.usrfiles.com/ugd/b8c837_0dd0570dae5c4c2e9554067085331ac9.pdf
    • https://static.usrfiles.com/ugd/b8c837_133d4397d13245c8aac7a98d672075fb.pdf
    • https://static.usrfiles.com/ugd/b8c837_4f13a905ecaf43fab28eb0a4a827fa9c.pdf
    • https://static.usrfiles.com/ugd/b8c837_b52dbac7ecc943829827dc9c0728049b.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30151397197.pdf
    • https://cdn.shopify.com/s/files/1/0433/0625/4504/files/vumanesirowateli.pdf
    • https://static.usrfiles.com/ugd/b8c837_6a8e558f2e084f9bbdb3e8fb9e034ad9.pdf
    • https://static.usrfiles.com/ugd/b8c837_d7ab815e6eef49bda4aab5af8fd98d98.pdf
    • https://static.usrfiles.com/ugd/b8c837_fb5d8e9373eb4ad481575361d91ae47b.pdf
    • https://static.usrfiles.com/ugd/b8c837_75afd577666840c1b0fdeee4ffab9cbf.pdf
    • https://static.usrfiles.com/ugd/b8c837_9e28ffe5e5424b798d995317962c44aa.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_off0000616f.bin
6464133b26c7c425ce175cc5c93350bff2b59436cebbaca31c7a9c337d00778a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x616F 5108 bytes
font_01_sfnt_off000072ca.bin
c529b7d939c1f2269ca51fabb4be1ef6eb4af832bf666af8ee4d3f8b180260ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72CA 10388 bytes

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