Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d4c325b506adafe…

MALICIOUS

PDF

55.9 KB Created: 2020-08-21 01:22:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5177cc7f39448df32ac49eb47d192514 SHA-1: 5ce685a94c860dbefa2b68852fc2365c60198599 SHA-256: 5d4c325b506adafeb25f3453d92ea7d37fe95181f8d0503079f1266245a3355d
194 Risk Score

Malware Insights

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

The PDF file contains embedded links that redirect to known malicious infrastructure, specifically a URL associated with SEO link farming and phishing lures. The document body, though heavily obfuscated, contains text that appears to be a search query for a PDF document, likely intended to trick users into clicking the malicious link. The ML classifier strongly indicates maliciousness.

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=atrocities+amendment+act+2016+pdf In PDF document text
    • http://bewev.lastoutleatherco.com/uploads/1/3/1/8/131856333/dexawodapawamosim.pdfIn PDF document text
    • http://xosebix.iambornmade.net/uploads/1/3/0/9/130969916/jabozo-pafotevil-rutebaba.pdfIn PDF document text
    • http://toduvusot.shottsbrassband.com/uploads/1/3/1/6/131636725/karogojitaka.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/1/0437/6484/2647/files/3757755283.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3976/0285/files/directv_remote_tv_codes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1359/3499/files/luzizonovit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0741/8274/files/satuke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8333/1752/files/nipimatevonevum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7508/4193/files/22886975220.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1822/2753/files/probability_distribution_function_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1003/0748/files/10962781111.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2910/0701/files/84535301182.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_off00009c74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C74 5740 bytes
SHA-256: 080a08f0869bfdca6ad475a30c7c33f913727d55b862f8419637d3116b345d7c
font_01_sfnt_off0000afe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFE2 10120 bytes
SHA-256: 49073943986d463e09592f666f6faaa4eb007f761a1454965e607bab1fde4e88

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