Malicious PDF — malware analysis report

Static analysis result for SHA-256 af70869885cbe8d7…

MALICIOUS

PDF

44.5 KB Created: 2020-08-19 18:14:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3e578514ce135c66820b9aaa0d908ce0 SHA-1: 1ac5541e42232aff7f2937fcae499b71234dfa16 SHA-256: af70869885cbe8d7fd092d03c741a20a89c1dd94b16e3ac87d897868a5ca899c
194 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are hosted on Shopify but point to a suspicious redirector URL. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that the primary link leads to known malicious infrastructure. The document body, though heavily obfuscated, contains the suspicious URL and text suggesting a lure for educational content. The overall pattern suggests a link-based phishing or malware distribution attempt.

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=farm+animals+worksheets+for+preschoolers+pdf In PDF document text
    • http://files.vermontsingingdrum.com/uploads/1/3/0/8/130874485/2823064.pdfIn PDF document text
    • http://files.statisticsfromatoz.com/uploads/1/3/2/8/132815298/cb1295cc.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/1/0433/1870/6341/files/fejaravogubudon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9721/7440/files/noise_risk_assessment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0618/8955/files/10534272636.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4504/3880/files/exercises_verb_to_be_simple_past.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xozujegemuzudileruzodedus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2724/2906/files/asp_baton_training.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2286/8892/files/91297239447.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9045/0334/files/sap_data_services_4._2_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6232/1567/files/academy_of_management_executive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3433/7695/files/momuzolaturubisomog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6147/7527/files/40717831569.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4118/4165/files/fajesowivelisunulikuxeliw.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61D8 5296 bytes
SHA-256: 72a6fe7f8a413d55096ffee3c409dfb7d91b44af1f1bacf598c13f4a877429a8
font_01_sfnt_off000073b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73B7 10352 bytes
SHA-256: e656ebd01eb53bd2b617e2f251b63d8e25c0cb029e175eceb4f4b49c4ce4a78f
font_02_sfnt_off00009710.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9710 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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