Malicious PDF — malware analysis report

Static analysis result for SHA-256 26659e722e02e9ca…

MALICIOUS

PDF

42.9 KB Created: 2020-11-03 00:32:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: abfa5a50b23323660c0c0b957bdc5355 SHA-1: 2dd9196de706f61b7e0549f94cf4dc389c304f47 SHA-256: 26659e722e02e9ca59521be313bca9c9a051a0dd25b7fef883c81291c43ade31
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains embedded links that are identified as malicious redirectors, specifically pointing to 'ttraff.me'. The document body, though partially corrupted, includes the same URL, suggesting a lure to a malicious site. The ML classifier also strongly indicated maliciousness.

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.me/pify?keyword=fellowes+saturn+3i+95+laminator+manual In PDF document text
    • https://kuvinonufero.weebly.com/uploads/1/3/4/3/134307364/4453850.pdfIn PDF document text
    • https://muzokive.weebly.com/uploads/1/3/4/4/134498707/lowirifoka.pdfIn PDF document text
    • https://fatagodudun.weebly.com/uploads/1/3/4/3/134327877/f5283e.pdfIn PDF document text
    • https://panidulupeju.weebly.com/uploads/1/3/0/9/130969186/reperob.pdfIn PDF document text
    • https://nijubalalo.weebly.com/uploads/1/3/1/4/131453980/poloxetosavi.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/57502951-bb50-4bd6-aa15-d36d015b3c2d/50377614002.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2730/0036/files/online_med_ed_intern_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/vexeliku/localism_vs_globalism.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/076b93b0-aa76-4ad5-917e-9d55fdf98ccd/1515529478.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5c99d85-7c9a-4f86-ba86-e6473d5984d7/generac_owners_manual_for_automatic_transfer_switch.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_off00006522.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6522 5320 bytes
SHA-256: ebe5765b1ca355e4fe3e51121102dc8e6c57b22522d7dece4237b5f3e5e42678
font_01_sfnt_off00007737.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7737 12124 bytes
SHA-256: 9dc68f0c6e4e31f3e40babb21742e80a84cbd4f643e057ea3048782bf1c3e14a

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