Malicious PDF — malware analysis report

Static analysis result for SHA-256 98c38a403ea470c4…

MALICIOUS

PDF

44.5 KB Created: 2020-09-01 02:51:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4ca4120c5715fb1d22a8a6b978075b84 SHA-1: 7cbef62ba1713d405eab26a228a35d87d3656551 SHA-256: 98c38a403ea470c4c6cb3e5775f3356f9068c06a41d9c8289c0e16f35640555f
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains embedded JavaScript and numerous links, with one critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=bootstrap+components+template+free', suggesting a lure to a malicious site. The presence of embedded JavaScript and a link farm indicates an attempt to redirect the user to malicious content, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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=bootstrap+components+template+free In 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/1/0429/2929/1427/files/20386810696.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4099/5490/files/aerobic_and_anaerobic_respiration_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6645/8265/files/763527406.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/30e015_0b47470254274e3484083a024089eb59.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/83e24f_a4c8e17c204f4d578b858f96f09264cf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2281/0263/files/agile_project_management_creating_innovative_products_jim_highsmith.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9028/0609/files/43729918562.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8106/3838/files/99874982249.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4398/6330/files/subuxawatubesevisugojup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0466/8532/3428/files/helvetica_neue_condensed_bold_ttf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2163/7544/files/project_charter_example_construction.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0884/2152/files/kodebolijogefitavu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1778/8830/files/bapubedotesi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8343/9011/files/barbados_slave_code_1661.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 7

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_off000070d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70D7 5212 bytes
SHA-256: f335e4b9a13bce04717670842f4f5242b483f9b68a1c9edf07aacd0da91db78a
font_01_sfnt_off0000827f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x827F 10272 bytes
SHA-256: ad5daf5d1578448aca44c4a7a4006ee773300cda185bcebc17c0cbea85ef00f1

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