Malicious PDF — malware analysis report

Static analysis result for SHA-256 5dafcdb709d287c8…

MALICIOUS

PDF

56.7 KB Created: 2020-08-05 01:27:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2dc2d4d2e1bfaef823457fd868fc6d36 SHA-1: f5b5f00954489d6dd11e9656ca4cb999f25850e7 SHA-256: 5dafcdb709d287c8951a5f8e37cbe3414b130737c5ede36ceb6d08104012687c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many of which point to a redirector infrastructure known for hosting malicious content. The document body and heuristics indicate a lure for users to download a PDF, likely leading to a phishing or malware download site. The ML classifier strongly supports the malicious nature of this PDF.

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.cc/pify?keyword=awakening+book+pdf In PDF document text
    • http://musaf.lean4teensllc.com/uploads/1/3/1/4/131482995/sinizagop-mimef-fojej-fuvibulo.pdfIn PDF document text
    • http://files.artisanbuildersconstruction.com/uploads/1/3/2/7/132712332/vozevujigufunujigo.pdfIn PDF document text
    • http://files.cobblandmarks.com/uploads/1/3/1/8/131856065/bijanotebatufu.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/1/0427/8976/5279/files/65711543684.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2423/6199/files/kojejezedotajutevebe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mukevomisuso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/49090326843.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2231/0811/files/wupopaxamivezegigotoba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9558/8002/files/59827074514.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1510/0826/files/how_to_checkout_a_branch_from_github.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3723/6117/files/63612139520.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5835/6639/files/86046875456.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7395/4204/files/82392223444.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6577/0133/files/paninaditizerebos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5340/6618/files/outlook_email_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6877/4807/files/44158994532.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 4

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_off00009f25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F25 5188 bytes
SHA-256: 154fa96a07b5fe0b4cb38a1ae54dfc1b01a13258f09a9808085e08906751e4e3
font_01_sfnt_off0000b0fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0FC 10892 bytes
SHA-256: a66fcba6f775c8dfb49d0b029d43ad26dabf8d69d7be842bab338915a9196bf8

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