Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e35987187d014a0…

MALICIOUS

PDF

42.1 KB Created: 2020-08-09 06:00:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0f0cd043c39edc4ee0950087ebda2f6b SHA-1: 01e51afd75f73c48186f5c99d45ea1c55861a524 SHA-256: 3e35987187d014a09275cf5f576f29f199d8e9b4b98b996acf4c30cd1ffca599
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with the primary redirector identified as ttraff.ru. This infrastructure is known for hosting malicious content and is used here to distribute further payloads. The document body, though obfuscated, contains the target URL, indicating a deliberate attempt to lure users to malicious sites under the guise of educational resources.

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=bodies+of+water+worksheets+for+kindergarten+pdf In PDF document text
    • http://files.milesofalaska.com/uploads/1/3/1/4/131454221/8806666.pdfIn PDF document text
    • http://zotowo.imtiyaazservices.com/uploads/1/3/1/6/131636725/872b4e31.pdfIn PDF document text
    • http://vizuza.summersautomotivedetailing.co.uk/uploads/1/3/1/0/131071164/4085405.pdfIn PDF document text
    • http://files.nmoc.co.uk/uploads/1/3/1/4/131406736/7125497.pdfIn PDF document text
    • http://files.gc5fx.com/uploads/1/3/0/7/130775221/jamilifemaroxu_wudibevawonupuv.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/1/0427/5827/5238/files/widikuxaveb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75901524911.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8896/0933/files/49582452612.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6164/7262/files/temij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1348/0354/files/magovawamorifidenokojow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1737/1797/files/tirofibadovopidutitewod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7113/6154/files/lomixomalogesazika.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4771/2928/files/36556403588.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9263/1962/files/xokajogotexakamikexowu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8344/0030/files/25010998290.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0683/5358/files/14406815647.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3699/7792/files/auc_in_r.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 8

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_off000065c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65C6 5476 bytes
SHA-256: 7a5297c91b7f113831f002ca8704d3d68c2947c938b12f989eaf3ddc0c23f4b5
font_01_sfnt_off00007882.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7882 10120 bytes
SHA-256: 345a94704a04c22150dbc456f85d52f5517ec7b52ebc3a59ad822cbaa19eeb4a

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