Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d90d3e0530f4366…

MALICIOUS

PDF

50.3 KB Created: 2020-08-20 13:01:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6a8930faf6d0ccf3110302118c9cf4af SHA-1: 9485732687746ea42148e62e47273702cbc35989 SHA-256: 1d90d3e0530f436677561e531243cecf541d9194514df69767adb686495ef083
194 Risk Score

Malware Insights

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

The PDF file contains a deceptive document body and numerous embedded links, many of which point to a known malicious redirector. The primary heuristic indicates that the PDF links to malicious redirector infrastructure, specifically `https://ttraff.ru/pify?keyword=cisco+ccde+study+guide`. This suggests the document is designed to trick users into visiting a malicious site under the guise of accessing study materials. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.ru/pify?keyword=cisco+ccde+study+guide In PDF document text
    • http://gakifa.spotlessga.com/uploads/1/3/0/7/130739592/fdfea8da81576.pdfIn PDF document text
    • http://xuwiv.maggiezlatanova.com/uploads/1/3/1/3/131378814/vijixanixuwexe_sovajosegi_nasabaji.pdfIn PDF document text
    • http://files.glsdc.org/uploads/1/3/1/0/131069897/gosefugavag.pdfIn PDF document text
    • http://files.reemancrc.com/uploads/1/3/0/9/130969312/jikegezerufud_kinufu_lurelibovo.pdfIn PDF document text
    • http://rujuzef.laedgefilmawards.com/uploads/1/3/1/4/131407263/wixowoxototaf_juxubi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3245/3015/files/6615580725.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5661/8911/files/chinese_paper_cutting_templates.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2692/2146/files/cistellaria_plauto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5203/9324/files/62156150258.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1636/2920/files/zesudapapuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6345/1560/files/22729871768.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0862/1719/files/dadegusemo.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000803a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x803A 4776 bytes
SHA-256: e11209a9a8b9cada391ab6ace1006ae3c42e34989e1694024aa637400286e4b1
font_01_sfnt_off0000908b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x908B 1800 bytes
SHA-256: e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d
font_02_sfnt_off00009919.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9919 10392 bytes
SHA-256: e60aeb283c9b854e866d197d2a252e43e6168dc7ed4d166852299afcc530609f

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