Malicious PDF — malware analysis report

Static analysis result for SHA-256 11bced7dab863dde…

MALICIOUS

PDF

48.9 KB Created: 2020-08-25 17:31:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: db6535e4f5736f21b1ebf2d3e09198f7 SHA-1: f18047b80af2df33e497cf07dc54d87264059aed SHA-256: 11bced7dab863dde794d075d8098eec6438a1e4bc0e4cbcc697541aaa901885d
194 Risk Score

Malware Insights

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

This PDF file contains multiple heuristics indicating malicious redirection and a link farm, with a high ML classifier score. The document body and embedded links point to a redirector URL, likely intended to lead the user to a phishing or malware distribution site. The presence of embedded URLs and the nature of the heuristics suggest an attempt to trick the user into downloading a secondary payload or visiting a malicious website.

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=baroda+mutual+fund+annual+report In PDF document text
    • http://files.18u.org.uk/uploads/1/3/0/9/130969061/ditikosorekiv.pdfIn PDF document text
    • http://files.grahamvangoffrier.com/uploads/1/3/1/6/131606605/3084077.pdfIn PDF document text
    • http://files.killerhorrorcritic.com/uploads/1/3/0/9/130969327/bamoxogununofutesoz.pdfIn PDF document text
    • http://files.yeoyat-soon.org/uploads/1/3/2/8/132815872/efa6578b83305.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/1/0430/0832/7829/files/13522198393.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/bbc_food_guide_cottage_pie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7287/9782/files/maplestory_forest_of_the_priest.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8808/5145/files/rewuboxizipusujokipavugef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4754/2175/files/33230565020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3393/6547/files/feliwopiborefis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6618/6135/files/67940452947.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9800/3874/files/zefuke.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 5

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_off00008239.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8239 5056 bytes
SHA-256: 53c44bb4f1b042865f60bd7d8d020a077db59a79d5fb2ab2c119aaed7f79f7e6
font_01_sfnt_off00009353.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9353 10316 bytes
SHA-256: bb345c1801d0a0c04c717159d7d9767c5e2da3da04b95054002bfdf43072ab4a

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