Malicious PDF — malware analysis report

Static analysis result for SHA-256 535324bb02f9983f…

MALICIOUS

PDF

44.3 KB Created: 2020-08-22 01:33:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4d6b06608d5a9a2f15f3f946744cc4dc SHA-1: f47d5580020286956aa377371d27f700b217d528 SHA-256: 535324bb02f9983fbdf24b517c8141901825a25ff8bce0c54704b610c1ade5d3
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, identified as a link farm. One of these links, 'https://ttraff.ru/pify?keyword=score+de+apache+ii+pdf', points to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains references to this URL, suggesting the primary purpose is to redirect users to potentially harmful content. No scripts were extracted, limiting further analysis of execution chains.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=score+de+apache+ii+pdf In PDF document text
    • http://zopopek.lawsontrek.com/uploads/1/3/1/3/131380429/sexase.pdfIn PDF document text
    • http://files.charliesblackpudding.com/uploads/1/3/1/4/131438692/vivomizusa.pdfIn PDF document text
    • http://files.fwmihk.org/uploads/1/3/2/3/132302993/muguju.pdfIn PDF document text
    • http://files.teamrehab.uk/uploads/1/3/0/9/130969855/lemefotaxezu.pdfIn PDF document text
    • http://mavalag.1sthkcsg.org/uploads/1/3/0/7/130776760/wuralodeba_govatatapeki_zexadi_puvuto.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/1/0436/1011/2163/files/descargar_libro_aura_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/glyph_of_the_orca.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0319/0181/files/pevibad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/budaya_populer_jepang.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0809/7445/files/74428228825.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xajubebajodefemun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0453/4692/files/gunixuwafigamuligelutopil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7829/5450/files/bipagilojatufumak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2280/1306/files/icao_annex_6.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3298/4222/files/kosuronovusaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4405/1871/files/truth_and_reconciliation_commission_canada_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8060/5077/files/92621926192.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F7F 5136 bytes
SHA-256: 03f50e9a6701055f1941dca7d55a6e0a0446a9ddcabbd0d78e85ad5b5594c85f
font_01_sfnt_off000080e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80E5 10320 bytes
SHA-256: 6c914a5dc5f058f4f63dc72b11223101f534e4cb332efbadb9da7aa9c00aa55a