Malicious PDF — malware analysis report

Static analysis result for SHA-256 41d74fc3fbd25e9a…

MALICIOUS

PDF

42.9 KB Created: 2020-08-07 02:11:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 98f08d7ca192f2138216af3512c10383 SHA-1: e68617a2560be832517fc3a346e5a7e8e1e71bda SHA-256: 41d74fc3fbd25e9a86c479227837a2843ab8254186d5bcf33df6af201c68db54
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.com. This indicates a phishing or redirection attempt to distribute further malware or content. 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=real+audiencia+de+charcas+pdf In PDF document text
    • http://files.brothersphotographers.com/uploads/1/3/0/7/130739892/ec67a2bb4035a30.pdfIn PDF document text
    • http://files.vivocollegemusic.com/uploads/1/3/1/1/131164052/7408558.pdfIn PDF document text
    • http://rejemufi.monetwithacamera.com/uploads/1/3/0/7/130776791/c328fd0df175.pdfIn PDF document text
    • http://wiluv.norwellgiving.com/uploads/1/3/1/4/131454065/3095538.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/1/0429/4891/9450/files/paliluzoxaxagojeniru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7375/7603/files/achilles_tendon_strain_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9881/6150/files/robavifegojugubetuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3177/9733/files/somibozi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1428/3686/files/wurovexifawajidabariro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8750/4294/files/codiers_smash_fm.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9897/1038/files/95797428599.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3699/0885/files/what_is_a_line_break.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4338/9597/files/metabolism_of_sulphur_containing_amino_acids.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pajovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5156/5724/files/storytelling_as_a_teaching_tool.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8538/0246/files/rojow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6616/9246/files/46622499678.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_off00006684.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6684 5248 bytes
SHA-256: 18f84b76beffc82a70803c1db33ea7480a55daffac6c3429acb8cd13e149c3d9
font_01_sfnt_off0000785c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x785C 11348 bytes
SHA-256: 30729aa547168d870d98a7a04a07fc09646380d9d3d5f0f7ec7f8e6d695d2724

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