Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa894ee961725278…

MALICIOUS

PDF

49.7 KB Created: 2020-10-10 01:43:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-06
MD5: 9fd86b4a9519ad2a3480d06115bd6821 SHA-1: 6cbc21011d9274ed86250291f57b26c6e31ba24a SHA-256: aa894ee9617252780a847721a7a05babdcf1be960e31a0d588c781fe575f2a75
194 Risk Score

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://cctraff.ru/strik?keyword=safety+first+car+seat+costco In PDF document text
    • https://site-1039830.mozfiles.com/files/1039830/tijogofa.pdfIn PDF document text
    • https://site-1039346.mozfiles.com/files/1039346/taxejivegupavad.pdfIn PDF document text
    • https://site-1037833.mozfiles.com/files/1037833/65510474156.pdfIn PDF document text
    • http://files.foxydesign.cz/uploads/1/3/1/6/131606367/f9a3a.pdfIn PDF document text
    • http://xilakise.sarahckart.com/uploads/1/3/2/7/132712116/924413.pdfIn PDF document text
    • http://sagefem.akagibustinscience.com/uploads/1/3/0/8/130813747/vifijetuvobozigunuv.pdfIn PDF document text
    • http://mufer.dinorowan.com/uploads/1/3/1/4/131438873/zotogejabilodijizub.pdfIn PDF document text
    • http://files.bronwyndohertyart.com/uploads/1/3/0/7/130739443/bimuxefita-xidemose-xevexuwujabizub-vifijonegun.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/0a8b81f4-e487-4901-957d-5ce94cd00428/joxofadodigijogixiril.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfaa7cea-ee65-4923-a18d-5fc16c68a7c0/97681504859.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/197a49bb-2d3a-4a34-968d-99ab4740b688/wedudavuxomiloda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8025/3593/files/pokemon_soul_silver_hack_rom_ita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2177/0656/files/3ds_apk_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/5971/9573/files/fuguvubilifatuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7111/8235/files/kosujonarazevoz.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000774b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x774B 4728 bytes
SHA-256: d936439ac8fec5d6e1f9599d80c948202fc9f7e5715b5b5f96678fea2f0724d7
font_01_sfnt_off0000876d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x876D 10592 bytes
SHA-256: 9beb5b0d632b39155ca18e142b1cea8c25d4110cb87f38cb3f3c71bdba35fa4d
font_02_sfnt_off0000ab93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB93 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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