Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b7091a9f2c16827…

MALICIOUS

PDF

54.2 KB Created: 2020-08-06 08:07:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: aac44d09ed5461d76a54b90f59eb702b SHA-1: 916f77969e344b60009da64565fe57f27ae6c841 SHA-256: 2b7091a9f2c16827a95f2e3865d5c15084478274bea4f0b9b5a2038ed703b0bf
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link pointing to ttraff.ru, which is also present in the document body. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The primary malicious URL is designed to appear as an 'algebra 1 inequalities test pdf', indicating a lure to a potentially malicious site.

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=algebra+1+inequalities+test+pdf In PDF document text
    • http://files.ontheroadtomarmomac.com/uploads/1/3/1/4/131454165/vikiwaj-duxozolo-rajolajufivuva.pdfIn PDF document text
    • http://files.seahawkstrackandfieldacademy.com/uploads/1/3/2/6/132681517/welelifujoma.pdfIn PDF document text
    • http://files.dipintothereef.com/uploads/1/3/0/7/130776619/donunuzekaporado.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/1/0430/0885/2117/files/rixegamidujotamolofi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3861/3415/files/xorovoxamo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9463/8749/files/lojenuwadarubezezimid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7273/2836/files/voltaire_philosophy_of_history.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0436/2906/files/samebukafudifolojiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6125/6096/files/gazamuvagavarodenal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48695811849.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6622/8898/files/figisitisoruvumijit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0318/3258/files/sejinanapoxegene.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4852/6246/files/tatatopofemodizip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9869/3013/files/carcinomatosis_peritoneal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7666/3961/files/bonezifisisodebepozimawe.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 4

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000093ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93EA 5516 bytes
SHA-256: fd9a9a39ed3ce77e56807a62d615fc897f0abf6c918ebf46e1c25fc579be8493
font_01_sfnt_off0000a6b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6B1 10828 bytes
SHA-256: ed29c57fef4a00d9dab9e05560bf05b5e55d81c85b60a3879a77e96521dae8aa

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