Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8b406c49bd3fab2…

MALICIOUS

PDF

52.3 KB Created: 2020-08-23 02:24:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 274b7df80099e6e80438ff1339bfeb7c SHA-1: 83ecad5c5f57af2cf285768017c0a3b8d44fa6bf SHA-256: c8b406c49bd3fab234338e08904b9344c146d969f4920e4094a74799def00296
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded URLs, many pointing to Shopify domains, but one critical URL redirects to a known malicious domain (ttraff.com). This indicates the document is designed to lure users into clicking malicious links, likely for phishing or malware distribution. 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.com/pify?keyword=bethel+school+district+v.+fraser+pdf In PDF document text
    • http://files.dmchallenge.org/uploads/1/3/1/6/131636808/69154df28.pdfIn PDF document text
    • http://files.newlife.ca/uploads/1/3/1/6/131637876/1168374.pdfIn PDF document text
    • http://files.fforegon.org/uploads/1/3/0/9/130969703/8459230.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/1/0431/7937/6798/files/77022772621.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1141/5959/files/97696743566.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7808/0925/files/33146976334.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6713/6408/files/gefazabazofudivaveleriba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/0608/2454/files/bstc_1st_year_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2392/5402/files/pometofimewuwatatasaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4469/9288/files/java_web_development_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1267/5995/files/51921569633.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3432/8738/files/32266880893.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9835/6392/files/81681758212.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2211/2152/files/absceso_axilar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54101174921.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2913/5514/files/botiwabiwowotixumomav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0212/5733/files/dofulujafepilat.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_off00008d09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D09 5384 bytes
SHA-256: 4418befa3f09ad5c3280067554603e2c4ca65e331f91c62b0c92a767ab152b06
font_01_sfnt_off00009f5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F5A 10220 bytes
SHA-256: 7e76dd314218c387e6d61772b3889cad47321c89a524ebc19a0bbcd8d0743ed1

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