Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e748d8619220ed9…

MALICIOUS

PDF

39.3 KB Created: 2020-08-02 05:23:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 21da084234a238908e9a07715e6ccf1c SHA-1: 82ab20e485ed6293e2dba2fcce0fc619bf93ef30 SHA-256: 5e748d8619220ed9343a488919ea36fc7f75c5fd40115be095c0fcaa16636998
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to SEO-optimized PDF files, and one critical link identified as a malicious redirector. The document body, though heavily obfuscated, contains text suggesting a lure for a "Briggs and Stratton owners manual" which, when clicked, directs to the malicious URL https://ttraff.ru/pify?keyword=briggs+and+stratton+owners+manual. This indicates a phishing or scam attempt using a document as an attachment.

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.ru/pify?keyword=briggs+and+stratton+owners+manual In PDF document text
    • http://files.huntsvillemilitaryband.com/uploads/1/3/0/7/130776225/7aa31dab.pdfIn PDF document text
    • http://files.kimberlycommunityband.org/uploads/1/3/0/7/130739004/6555479.pdfIn PDF document text
    • http://files.jenkeyte.com/uploads/1/3/1/4/131438692/4254917.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/1/0438/4718/8640/files/pisamufote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3631/9639/files/laruw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6417/2445/files/74811109960.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4395/3567/files/77266634888.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9715/9832/files/41131946098.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6825/2565/files/kubakufupagakexabuzeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2873/2314/files/fixurinunumevamuwifuxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4977/0395/files/95791137824.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8976/5276/files/20113743088.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3262/5831/files/my_teacher_ate_my_homework.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1848/4888/files/wuwosutokirevumakak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5680/6565/files/14980729414.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8697/0018/files/vejemapudutazofesonojowu.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 4

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_off00005cf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CF7 5288 bytes
SHA-256: 1d38ea45267b696b972cccd5673db8ffa0dde47615c191725be5eaa2c2089f70
font_01_sfnt_off00006eed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EED 9796 bytes
SHA-256: eb87940f4f560030468b72fa35e6d9ad7855198df269abcf9a9013cf98babe7f

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