Malicious PDF — malware analysis report

Static analysis result for SHA-256 84f8a12c054a8eca…

MALICIOUS

PDF

51.2 KB Created: 2020-08-02 05:42:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 82e2a0dd73cd5925a9dc4181b01c090c SHA-1: b8989ed3f25e746521218116982bfe9b7f692552 SHA-256: 84f8a12c054a8eca57460dd2e2787d7a460c6e98d7d2f0e8eb44260b6c7eff07
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) which is flagged as malicious. The document body, though heavily obfuscated, contains the same malicious URL. This indicates a phishing attempt using a link farm to disguise malicious intent, likely to trick users into downloading malware or visiting a malicious site.

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=real+vocal+book+pdf In PDF document text
    • http://files.253baseball.com/uploads/1/3/1/4/131483154/jogesetunuj_jalukob_mipamu.pdfIn PDF document text
    • http://files.oldstatenisland.org/uploads/1/3/0/8/130814861/bidarisesebazifuxeto.pdfIn PDF document text
    • http://files.thecometzone.com/uploads/1/3/1/4/131453252/waxebagax_jenez.pdfIn PDF document text
    • http://files.mohlerdance.net/uploads/1/3/2/6/132681657/331296d0f.pdfIn PDF document text
    • http://files.essentiallygardening.com/uploads/1/3/1/1/131163960/27e35c80d2aa31f.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/1/0428/8030/3263/files/the_duck_song_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6799/8359/files/xuvepejagara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8844/5604/files/22177748647.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4232/4125/files/90044069244.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2537/5130/files/48316200320.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5918/2745/files/the_ultimate_guide_to_divination.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8799/4792/files/46330743501.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9437/6605/files/vezofogemazuninupamop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4062/8120/files/kevemovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3493/3398/files/vovojonarogaroxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5771/7152/files/senotekepakawatawuviwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2732/5351/files/61914289612.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 6

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_off00008a40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A40 5144 bytes
SHA-256: 927d9c89f49079c1d00a0089cf3b329b70cc4c1d8bab5102c745a4eaa0af3a26
font_01_sfnt_off00009be7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BE7 10512 bytes
SHA-256: 4b655dd88e8e0dd6909d9f52b168a7f0c6c1fc49a7a420b3c8fe920df2c28412

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