Malicious PDF — malware analysis report

Static analysis result for SHA-256 8297037f5dcfb285…

MALICIOUS

PDF

41.8 KB Created: 2020-08-22 11:38:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 53aa42e9d206714e40513cedfbd64a97 SHA-1: b0866e98e5834a4b948912c16e39f691b9e09879 SHA-256: 8297037f5dcfb285f050596d85551436c4f87e382772d5b75c5d4c8b88debaae
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a critical heuristic firing indicating these links point to known malicious redirector infrastructure. The document body text and embedded links suggest a lure for free downloads, which is a common tactic for phishing or malware distribution. The ML classifier also strongly indicated 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=infection+control+risk+assessment+template In PDF document text
    • http://juwinaza.nctreasurechest.org/uploads/1/3/1/3/131398140/8929553.pdfIn PDF document text
    • http://files.mosaicjusticenetwork.org/uploads/1/3/1/3/131380569/8301207.pdfIn PDF document text
    • http://files.rbc-l.com/uploads/1/3/1/4/131438557/d66ea2ed85.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/1/0430/6354/1917/files/stolen_innocence_jan_broberg_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43106273748.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8150/5695/files/nabawotedafonolovobeja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6341/8784/files/esl_worksheets_for_beginning_adults.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7272/4885/files/82569754801.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6705/7063/files/tomobizitebedibo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3215/8116/files/bozeruxezozagerusix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6663/0050/files/dnd_5e_incapacitated.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/1181/3015/files/32914514006.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/50306279194.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_off000066a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66A3 5160 bytes
SHA-256: a642dc0513969650da0806223b09bf3d5104bcaff95f613830942ed861c46397
font_01_sfnt_off0000781a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x781A 10012 bytes
SHA-256: db76458dbed28455f7e6972671b616b5146dcd252308033c4bfca42b0531f5c6

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