Malicious PDF — malware analysis report

Static analysis result for SHA-256 49a0d1980c0714ad…

MALICIOUS

PDF

43.9 KB Created: 2020-10-03 22:11:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 3acc1000729d6d1c33703a4538935638 SHA-1: f854fd6555342edf80e15c7f8152af4fc6b29b1f SHA-256: 49a0d1980c0714ad80e0607c9fe2c4cef49581dadda17bac712d256a53bca969
124 Risk Score

Malware Insights

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

The PDF contains embedded links that point to known malicious redirector infrastructure, specifically 'ttraff.link'. The document body, though heavily obfuscated, contains a reference to the same URL, suggesting an attempt to disguise malicious content as a guide. The presence of numerous disposable hosting links further indicates a link farm designed 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.link/pify?keyword=barrows+guide+2007 In PDF document text
    • http://jomumalem.blakesburgchurch.org/uploads/1/3/1/4/131452958/d8ca7e17eb5.pdfIn PDF document text
    • http://dedito.willowlanebarn.com/uploads/1/3/1/3/131380429/luzoxofof-lekonox-soxir.pdfIn PDF document text
    • http://files.tomburdenphotography.com/uploads/1/3/1/3/131381363/3828437.pdfIn PDF document text
    • http://vupavu.raymondbordogna.com/uploads/1/3/1/8/131856476/922686.pdfIn PDF document text
    • https://site-1036965.mozfiles.com/files/1036965/wewoturonasi.pdfIn PDF document text
    • https://site-1036679.mozfiles.com/files/1036679/93241738454.pdfIn PDF document text
    • https://site-1039553.mozfiles.com/files/1039553/soruwusederararu.pdfIn PDF document text
    • https://site-1036625.mozfiles.com/files/1036625/jiwegirurutifutoma.pdfIn PDF document text
    • https://site-1038913.mozfiles.com/files/1038913/degozijemijolivetireto.pdfIn PDF document text
    • https://site-1042768.mozfiles.com/files/1042768/jodud.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b771748-8b64-495a-a038-0cb491dcbb7d/13015081880.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b117492e-56cd-4023-9d95-92d6fe414cc0/81173187544.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006dd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD0 5456 bytes
SHA-256: 59511fd348a4c99e90bbde586a1b4cc4bcd60437ba5fa5a6946a33f18b93ca9a
font_01_sfnt_off0000808a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x808A 10188 bytes
SHA-256: 2f721b0f77117f65844f2fc417e1e70e8388893280bb43664586145e3ad245db

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