Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f062ac2ad762e50…

MALICIOUS

PDF

43.1 KB Created: 2020-08-18 17:16:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5f160ec3e6279f423b2c178c7f1d9e4f SHA-1: 38ef6ace0d76cf971a2c1071f1ab212226ad907f SHA-256: 0f062ac2ad762e50b61ef754998c6cdf496dab2b5d4ee5c246433f30b8597b4b
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service that ultimately leads to malicious infrastructure, as indicated by the 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' heuristics. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=arduino+coding+learn+pdf', suggesting a lure for free educational content that redirects to a malicious site. The ML classifier also strongly indicated maliciousness.

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/pify?keyword=arduino+coding+learn+pdf In PDF document text
    • http://files.ashlandcountytowninsurance.com/uploads/1/3/1/3/131381900/59149385a8f.pdfIn PDF document text
    • http://files.oakmont85south.com/uploads/1/3/0/7/130739174/1762308.pdfIn PDF document text
    • http://files.greenevilletnhikingcycling.com/uploads/1/3/1/3/131384127/ab6a72.pdfIn PDF document text
    • http://files.thejoyfueledteacher.com/uploads/1/3/1/8/131858592/vifufisemizu-fotidezejamel-potijuzebitisu.pdfIn PDF document text
    • http://tuwubuda.davispharmacyclub.org/uploads/1/3/0/8/130873995/6bb663e5f.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/1/0434/1897/6408/files/finding_circumference_diameter_and_radius_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4755/9067/files/linksys_ea6900_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7008/7587/files/lekurifaxexujuso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8471/7979/files/fokivejesuluguwimafujikin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/sapemufapuvesero.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7233/1675/files/gefasapupufup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2795/4853/files/kogejekoxeleporagik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2052/5469/files/zedasebaluf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/power_bi_report_server_requirements.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7347/8560/files/34110321930.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8482/4222/files/10858590852.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_off00006b71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B71 5136 bytes
SHA-256: b8fbec45fb5ab08abcf6d3c5a34669fce72149a1caacb8dbc1db6d282f8dcd98
font_01_sfnt_off00007cf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CF7 10128 bytes
SHA-256: 186c3e24e71546c07ad9a7e67eacf53e953888eda64248d51656530e126f2dbb

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