Malicious PDF — malware analysis report

Static analysis result for SHA-256 1550c90756a5de95…

MALICIOUS

PDF

40.5 KB Created: 2020-08-19 05:26:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c794fc1f63df9ce1cee74992963c75eb SHA-1: a8cbd0e49fe5f7adecc3e7ee598061f2f33dd96a SHA-256: 1550c90756a5de9548c543d35f27467c3160176647ba8eb2c17a234074a7be17
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links, many of which point to a redirector service (ttraff.ru) that is flagged as malicious. The document body and heuristics indicate a lure for free downloads, likely a phishing or scam attempt. The presence of a malicious redirector URL suggests the document is designed to lead users to a harmful 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=canon+pixma+mx492+printer In PDF document text
    • http://files.readingsync.com/uploads/1/3/0/9/130969494/dekun-tezeri-bunegedur-jukugagibudojib.pdfIn PDF document text
    • http://files.beyondbeautydevon.com/uploads/1/3/0/7/130739678/5586693.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/1/0429/8106/4853/files/pokinisanepuverewe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/9366/0582/files/full_nfl_schedule_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1865/7697/files/97779248989.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8778/2297/files/66549649436.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9869/4042/files/50198973148.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6203/4589/files/acido_acetico_propiedades_fisicas_y_quimicas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4639/6326/files/famous_sole_proprietorship_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5350/5946/files/fumibomipokativizav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9462/1862/files/spelling_words_for_grade_7.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/6205/5332/files/step_growth_and_chain_growth_polymerization.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6479/5044/files/24803935243.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0086/3643/files/85763591108.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 3

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_off0000610d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x610D 5104 bytes
SHA-256: 41d72c854177de30e9c0dea172489842a10594805f8dbd37ad25c8377e6231eb
font_01_sfnt_off00007262.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7262 10264 bytes
SHA-256: ed55ec3315f8a3fd04be0810c4736514b73c2a1a122e5bcea3153a72abd14496

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