Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ef5655260180c55…

MALICIOUS

PDF

44.5 KB Created: 2020-08-20 07:08:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e967e08dbd932f5a2c375a4d765eb0c4 SHA-1: dd42e964c5e32b2dfa8b7d2c17bdaa95c0d54254 SHA-256: 7ef5655260180c556e16914cfe89176e07b74b31e52cc39618b530368064a8fa
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a mass link farm, with many links pointing to Shopify domains and one primary redirector URL. The ML classifier strongly indicates maliciousness, and the presence of embedded URLs suggests an attempt to redirect users to malicious infrastructure. The primary malicious URL identified is https://ttraff.cc/pify?keyword=groups+of+food+worksheets, which is likely used to funnel victims to a phishing or malware distribution site.

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=groups+of+food+worksheets In PDF document text
    • http://files.fwrna.org/uploads/1/3/1/0/131070202/tudojujov.pdfIn PDF document text
    • http://bigito.boostfitness.co.uk/uploads/1/3/1/8/131856408/fapefemilepepo.pdfIn PDF document text
    • http://files.lorimuldoon.com/uploads/1/3/1/4/131409574/kefutona.pdfIn PDF document text
    • http://pedomefi.redlineinstallers.com/uploads/1/3/2/6/132680981/jojufunijovowewobu.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/1/0431/1531/5349/files/27001855104.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1500/1496/files/animal_farm_enotes_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8909/1998/files/52913590095.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5040/1943/files/ceh_official_certified_ethical_hacker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3604/9571/files/nebolomudit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6590/1210/files/bulemabifobovilizoso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9545/7941/files/zajojeforevepoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34292265756.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7372/4825/files/44554247476.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/1472/2460/files/lean_six_sigma_black_belt_certification.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1423/4016/files/36026499046.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3151/7605/files/rixopaba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9529/4105/files/altium_designer_tutorial_espaol.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006389.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6389 4800 bytes
SHA-256: 3de7a4e2ecf23803424b8c9dc2c67998d9d8beced64cb8368b12ad2c7be9c8d8
font_01_sfnt_off0000740e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x740E 10136 bytes
SHA-256: cbada20ebb35fbf98168072dd760d0a5c4962e9303e8471ce326f24889386b18
font_02_sfnt_off000096cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96CF 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34