Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ff17f720bd8bea9…

MALICIOUS

PDF

50.5 KB Created: 2020-08-16 17:38:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 636a4aa2195b1662c60f9f86df64c943 SHA-1: 77ecd0f2ba720e574242f878b910c3afac818dfc SHA-256: 4ff17f720bd8bea95d978180ac116d69223cf86b3920e71c364d4a9279b8dbec
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, nineteen of which are generated SEO links pointing to various PDF files hosted on Shopify. One of the primary links directs to a known malicious redirector, ttraff.com, which is likely used to obscure the final malicious destination. The document body contains garbled text but includes the URL that triggered the malicious redirector heuristic.

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=aiag+ppap+manual+3rd+edition In PDF document text
    • http://kepakero.kupetspinkinvitational.com/uploads/1/3/0/7/130740597/657a456.pdfIn PDF document text
    • http://jebimoki.gosynthetic.ca/uploads/1/3/1/4/131453134/febusoni_guvebo_tudoxamo.pdfIn PDF document text
    • http://soporasaw.meacorsigns.com/uploads/1/3/2/8/132814930/1f40d90b.pdfIn PDF document text
    • http://files.pedicureastridpeperkamp.nl/uploads/1/3/1/3/131383434/2067338.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3448/3605/files/hipertensi_menyebabkan_aterosklerosis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1679/8883/files/stroke_physiotherapy_assessment_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4474/7929/files/33347296412.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8918/3398/files/39160651649.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/vesimop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0161/8327/files/17666933268.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9477/8791/files/tebiduwiwomazugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1777/8838/files/gojonizelavoteja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3486/1991/files/75168894267.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0459/1271/files/54488429376.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4903/3627/files/norubop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3393/6547/files/jojiferuvoniledud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1672/2344/files/baldur_s_gate_official_strategy_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4418/1928/files/rofovumugijemi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2358/8773/files/hitron_cgn3_manual.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E7D 3140 bytes
SHA-256: 466743e661afcca841a4de4560ddfdba3a0f89c12147d4d1d6a49db364288042
font_01_sfnt_off000079ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79AD 5136 bytes
SHA-256: 0f4a15ab878cbef2fcf3f8af96d0857f9fe5b4638ffb7edc0e08d1e3f37e929e
font_02_sfnt_off00008afe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AFE 10360 bytes
SHA-256: a112ded3495ad23b134cbd4ce1905112655f358866fe721d2d3c2d9dedfe608a
font_03_sfnt_off0000ae60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE60 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378