Malicious PDF — malware analysis report

Static analysis result for SHA-256 b62ed67d6198b986…

MALICIOUS

PDF

43.6 KB Created: 2020-08-12 01:08:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0078d27c690c3c4cdc2a4f7dee845888 SHA-1: a49dfdb2c8a762f9eb29eccae563028a94417715 SHA-256: b62ed67d6198b9868b54972e9f761bbbe0f9fdca863ea2115f5507993e54667c
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.com/wb?keyword=jtag%20spec%20pdf'. The document body, though heavily obfuscated, contains this URL and appears to be a lure related to 'Jtag spec pdf'. The presence of a large number of external PDF links suggests a link farm or redirection strategy to obscure the final malicious destination.

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/wb?keyword=jtag%20spec%20pdf In PDF document text
    • http://files.ravensfieldhockey.org/uploads/1/3/2/6/132681201/8996768.pdfIn PDF document text
    • http://zeruxeko.educarechildrenscentre.com/uploads/1/3/1/8/131856257/8679414.pdfIn PDF document text
    • http://jirir.su649.org/uploads/1/3/1/3/131380600/zupituje-jalovobesebafe-jowaj.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/1/0434/0118/3397/files/partnership_agreement_template_uk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8768/4003/files/a1275_transistor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6983/1323/files/organisational_behaviour_management.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0233/9232/files/tenetamaroravefi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1090/6518/files/baligobesupuxerufo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5900/9943/files/btec_applied_science_textbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8477/4552/files/nuparadul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8566/9279/files/18520349503.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3936/7061/files/install_wow_addons.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8865/0142/files/27741516093.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5522/5763/files/importance_of_english_in_multilingual_society.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4578/8584/files/mepowoke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/39843759369.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3462/4668/files/brazilian_jiu_jitsu_for_beginners.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 1

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_off00006e1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E1D 5184 bytes
SHA-256: b7f3afd6cd6ba5f2a8b9f145a797bbd2c6a65f31ffaa5f72e19667bd3daf32fe
font_01_sfnt_off00007fd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FD5 10052 bytes
SHA-256: d22ba4ebf7883d2fe7b19e59ee4ed8cf0e953b71b5716b8325db45878d003585

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