Malicious PDF — malware analysis report

Static analysis result for SHA-256 3df6418b3692be83…

MALICIOUS

PDF

41.4 KB Created: 2020-08-11 02:17:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4b2abbd4b8a94b8ce72abc094fabf974 SHA-1: e3c3293c7e89facd5ad23a7638ea39e970010b43 SHA-256: 3df6418b3692be8379429a8e9ef46c9e83ca655dbe720c02cbc3a1797973ae54
194 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, many of which are designed to appear as legitimate PDF downloads. One of these links, 'https://ttraff.com/pify?keyword=analog+and+digital+multimeter+pdf', is identified as a malicious redirector. This suggests the document's primary purpose is to trick users into visiting malicious websites by disguising them as PDF 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.com/pify?keyword=analog+and+digital+multimeter+pdf In PDF document text
    • http://vuworob.jeroenkoevoets.com/uploads/1/3/1/3/131383483/654fbc4f28cf.pdfIn PDF document text
    • http://fijofa.hanisthegroomer.com/uploads/1/3/2/8/132814930/sekazigesekid.pdfIn PDF document text
    • http://files.colinguthrieking.org/uploads/1/3/1/1/131164456/wazinudizetepuv.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/1/0433/0687/7080/files/nulanevu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6463/1195/files/vunifalagi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7061/1861/files/activities_for_halloween_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4650/8456/files/63_country_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8256/3232/files/black_law_dictionary_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0935/1578/files/10330724951.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4341/3407/files/all_about_me_questions_high_school.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8037/5708/files/junegabitidizokarudofiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5011/4978/files/52175869387.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/75887564082.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65A5 5172 bytes
SHA-256: 7109d08e0e2a6167213a62e8c92c274ad0fcaa224ecd1a569618fbb9a98e75d8
font_01_sfnt_off00007725.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7725 9972 bytes
SHA-256: 17338989061a9b3f69c90bf8687dd564ea9c2525769bde290823271c0dddc369

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