Malicious PDF — malware analysis report

Static analysis result for SHA-256 615a0b8224b4b754…

MALICIOUS

PDF

39.1 KB Created: 2020-08-14 20:28:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c2d390ca2e1fd44786a52e0fb6d28dd0 SHA-1: b8e7b7edea58aae242d041f897c38927b772f0ba SHA-256: 615a0b8224b4b75425dface5db6a97f9de991e1a4a0a64bb1743b141ad43ddc6
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains numerous links, many of which point to a redirector infrastructure known for hosting malicious content. The primary redirector URL is https://ttraff.cc/wb?keyword=connectives%20worksheet%20for%20grade%205, which is likely used to obscure the final destination and potentially track user engagement. The document body, though heavily obfuscated, contains references to this redirector and other URLs, suggesting a phishing or scam attempt disguised as educational material.

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.cc/wb?keyword=connectives%20worksheet%20for%20grade%205 In PDF document text
    • http://files.yogatheartofwellbeing.com/uploads/1/3/0/7/130775017/tasanuwebofupi.pdfIn PDF document text
    • http://bimum.signsbytran.com/uploads/1/3/0/8/130814328/5f7ae39a.pdfIn PDF document text
    • http://files.whyeverythingcostsmoney.com/uploads/1/3/2/6/132682441/a7a15b7c9f59.pdfIn PDF document text
    • http://files.dyw-edinmideast.com/uploads/1/3/1/6/131606874/laxulujusi_sarijej.pdfIn PDF document text
    • http://files.stephanierachelschwartz.com/uploads/1/3/2/3/132303353/noposasepap-sesizokini.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/1/0433/6805/4940/files/97895356926.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8125/2512/files/84783469218.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/6114/4728/files/jurnal_akuntansi_sektor_publik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3174/1095/files/network_marketing_thesis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8969/0773/files/91222287362.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3988/2402/files/harpsicle_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/nevokoxorara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9654/7230/files/ludej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2834/9085/files/molinitunaxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4718/1718/files/funes.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_off00005a6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A6F 5496 bytes
SHA-256: 895021a98241120b52cc44eb2cf3abdfa82209e3d5b254885a3fad9eed743947
font_01_sfnt_off00006d2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D2E 10152 bytes
SHA-256: c3ea4b115feed3092cabd7efb4d4dae6a7b70ba551524b5b8735144196ffdc82

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