Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fdbdc3894c84b1a…

MALICIOUS

PDF

42.3 KB Created: 2020-08-24 21:40:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b8950225feb51ad7b9eab9137b24e439 SHA-1: 8510c40fe38d7762c443e5318a2af3ed6b86a7f1 SHA-256: 3fdbdc3894c84b1aaf0127d762de6a07b45c22298490cf000eb09777dff01fdc
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 Shopify domains hosting other PDFs, creating a link farm. One critical heuristic identified a link to a known malicious redirector at https://ttraff.ru/pify?keyword=extended+essay+skeleton+outline+template. This suggests the document's primary purpose is to direct users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted from this sample.

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.ru/pify?keyword=extended+essay+skeleton+outline+template In PDF document text
    • http://files.collection-me.com/uploads/1/3/2/8/132816195/bc6f4cdc2c0.pdfIn PDF document text
    • http://xagefuseg.silverleafacu.com/uploads/1/3/1/4/131454012/totojaxovudax.pdfIn PDF document text
    • http://fevozo.taxi-service.us/uploads/1/3/2/8/132814900/nozewum-xawilaritudu.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/1/0433/7437/9173/files/abzurdah_libro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5057/2695/files/sazari.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0124/9955/files/25713356843.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0328/1571/files/solving_equations_with_angle_relationships_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3713/0914/files/fepofeki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6950/4662/files/jeevan_praman_patra_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3614/5814/files/27176598804.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9545/7941/files/26951393132.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7259/3821/files/arduino_pro_mini_328_datasheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4843/5861/files/adm_pro_apk_6._4._0.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/5289/6154/files/dazevulobufupe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8828/9694/files/82747683207.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A61 5084 bytes
SHA-256: 104a1e99c114f1ba6751256187e6a35c25ece2685d48046d232798ee3793a87c
font_01_sfnt_off00006ba4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA4 10116 bytes
SHA-256: b0679bc6dd53e0914b6ca60a3f26c9a3d74fde473c3a2322f82f8ba045a2fcb5
font_02_sfnt_off00008e33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E33 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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