Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a7f4d89215445df…

MALICIOUS

PDF

41.5 KB Created: 2020-09-18 02:18:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3e31270132f10d03ad88bcee88f44b44 SHA-1: 5077cb566833857a7813b3ff0a94757cd10026dc SHA-256: 7a7f4d89215445df61439cd31902cd604feca40698073a44449fc63b23105f11
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a primary redirector URL identified as malicious. The document body text and heuristic firings indicate a lure related to a 'parent portal' which directs users to a link farm, likely for phishing or malware delivery. The ML classifier strongly supports the malicious verdict.

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.link/wix?keyword=parent+portal+hsd153 In PDF document text
    • http://files.lakendragarrison.com/uploads/1/3/1/3/131383954/0c915.pdfIn PDF document text
    • http://zogego.callanjames.co.nz/uploads/1/3/2/8/132814930/2df2b925d9ddc.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/1/0433/0687/7080/files/gubiwunezekubukezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9462/1862/files/conventional_agriculture_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8386/6018/files/setixojuposo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9975/8498/files/symptoms_of_hiv_and_aids.pdfIn PDF document text
    • https://67258115-f70e-49a7-8a75-587b18f555f4.filesusr.com/ugd/234f58_45f4e0bd67354760be08df8d82eaff15.pdf?index=trueIn PDF document text
    • https://83ca5f7d-fb09-40eb-a1e1-fd8f76682386.filesusr.com/ugd/4fb05f_b87502bad96b49358aea26d7d49fa144.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3693/2253/files/13429397301.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6106/7428/files/bootstrap_background_image.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8468/3166/files/dobowukinoditaragalewob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0046/9403/files/wogexutuwewibaduvusisufe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4405/9806/files/arm_strengthening_exercises_for_seniors.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 2

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_off0000639e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x639E 5388 bytes
SHA-256: 1d3c9c4b36aade4a0f6f2b693c1fa549bba68e90026f8d075807b1a1f6c31920
font_01_sfnt_off000075ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75ED 10392 bytes
SHA-256: d32b442f2f01b5e3b8d992a7eae44e64d00b3893b3378a17c21aef19671ac6ac

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