Malicious PDF — malware analysis report

Static analysis result for SHA-256 820860a28c1a0659…

MALICIOUS

PDF

41.0 KB Created: 2020-08-11 04:37:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a181ef3c51b040818f42e77988074e13 SHA-1: 94412326da2595e444df932a2e46c3ae264419cf SHA-256: 820860a28c1a0659223c1f28493208d0187b7a1dd38b58a4d6539bd0a72a0089
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, contains references to the redirector URL and other PDF files hosted on benign-looking domains, suggesting a link farm designed to distribute malicious content. The primary malicious URL identified is https://ttraff.cc/pify?keyword=guns+n+roses+paradise+city+tab+pdf.

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=guns+n+roses+paradise+city+tab+pdf In PDF document text
    • http://files.triberoastingco.com/uploads/1/3/1/0/131070362/wegarima_kadupaw.pdfIn PDF document text
    • http://files.newarkrotaryclub.org/uploads/1/3/2/6/132681342/lalosaxuzexaw_sogesomid_sazukifi.pdfIn PDF document text
    • http://files.wanderersmagic.com/uploads/1/3/1/6/131606268/wobekemiliji.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/1/0428/9835/8432/files/98973723668.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5121/9104/files/warusatotepufaxerer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xarapidarobumebavo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gozoba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12584167006.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1109/6221/files/32884014267.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5651/2676/files/nusinofetasavokale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0935/1585/files/90272148079.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1098/2041/files/tikurekugimizegupog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0047/1456/files/80195187225.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0576/2974/files/exploring_physical_science_1977_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7973/8278/files/40011649283.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7754/1787/files/87553389812.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_off00005711.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5711 5388 bytes
SHA-256: c931fe7e5ecd6e16217f92c76343a4eda39f5f3413ec6cdef9b6f9a203298cd5
font_01_sfnt_off0000697e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x697E 14336 bytes
SHA-256: 94209748828242e71a907440cbcefca49677c5dcb6606b9d152e868715f4e39b

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