Malicious PDF — malware analysis report

Static analysis result for SHA-256 5521f596e92171f6…

MALICIOUS

PDF

51.7 KB Created: 2020-09-20 10:42:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 75592967f4de5b66093dcf2883a1deda SHA-1: f74f60dd63b06eddbc6d7c8a99824d1ff81afc72 SHA-256: 5521f596e92171f680d1bf7d668f73243fd3724841b7cb4e6286e453c6a923f2
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with one heuristic identifying a malicious redirector link. The document body, though heavily obfuscated, contains the target URL and a list of other URLs hosted on Shopify, likely part of a link farm to improve search engine ranking for malicious content. The primary attack vector appears to be directing users to the malicious redirector.

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.club/wix?keyword=patrician+and+plebeian+meaning In PDF document text
    • http://nopon.rockwoodarts.com/uploads/1/3/1/8/131856570/12e068.pdfIn PDF document text
    • http://files.headphonemusiclabel.com/uploads/1/3/1/4/131438471/9529404.pdfIn PDF document text
    • http://files.timwilsonfineart.com/uploads/1/3/2/7/132712266/892869.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/1/0435/0358/3384/files/vuzikow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5653/7505/files/sizibigus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1344/5544/files/59428938766.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/5608/2325/files/how_humans_evolved_7th_edition_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/6887/4903/files/85346425974.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9870/1977/files/66951876098.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4451/1645/files/resuwegomebipobukane.pdfIn PDF document text
    • https://76503f51-c8c7-4800-9a53-9194cbb7f860.filesusr.com/ugd/370b54_43e664ac629f40c78b754c52b1e07dc3.pdf?index=trueIn PDF document text
    • https://7a5442c3-7bb2-4ac7-8999-3ca8b9a89740.filesusr.com/ugd/b5973a_34efe112d40f438cadf7adccfca73c16.pdf?index=trueIn PDF document text
    • https://2fb7f56b-46c9-4a3d-ba48-90e606b72828.filesusr.com/ugd/77eba6_5c3a06e7c0bb41c8a393848efbabaf03.pdf?index=trueIn PDF document text
    • https://5ccc8196-7f9d-4430-9a53-75672502aa8e.filesusr.com/ugd/8d5d69_dcd5e048d4fe40f59060d25a7c6a6ae0.pdf?index=trueIn PDF document text
    • https://1ee7c45e-5e8b-4bc8-9433-c2e595de2922.filesusr.com/ugd/aaaf79_347aa2600c864ebebd27eeff19f8aa85.pdf?index=trueIn 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_off000089e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89E1 5356 bytes
SHA-256: b145ca8e6d241a5c894362c0b94a689dadab02e092201ca8692d9a7662f84ad3
font_01_sfnt_off00009bfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BFA 11304 bytes
SHA-256: 54f25b06b874ef23c98c9297be09fe36e0b099b58d951de2015187b53fd9c6dc

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