Malicious PDF — malware analysis report

Static analysis result for SHA-256 a665373156f4ab24…

MALICIOUS

PDF

60.8 KB Created: 2020-07-31 20:41:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9a53cef5a897838ed9a5814d54be3f4d SHA-1: 58b47a5279d2d1844d611ffb5adb77ce141e99b0 SHA-256: a665373156f4ab2408dab8c71ae895e0323e81dcf2243763988af9e13e6c0f72
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains embedded links that redirect to malicious infrastructure, specifically identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text suggesting a lure related to 'Gw2 crafting guide'. The primary malicious IOC is the redirector URL, which is likely used to serve further malicious content or initiate a download. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, likely for SEO manipulation or to distribute the malicious payload across multiple domains.

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.com/pify?keyword=gw2+crafting+guide In PDF document text
    • http://files.youngchaelee.com/uploads/1/3/2/6/132681992/4623363.pdfIn PDF document text
    • http://files.minagcapital.com/uploads/1/3/1/6/131607522/zejojibosake_levupufivaxuvix.pdfIn PDF document text
    • http://files.atlantadentalanesthesia.com/uploads/1/3/1/4/131455883/najikenusapijevofifu.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/1/0429/9515/5105/files/vusilapogadesuniku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5856/9128/files/kuvefosi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7030/7995/files/8437176513.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1992/6679/files/lizate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9857/0909/files/fukavoliravolot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8642/9861/files/wedozagojavarolopewor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4539/4331/files/49020304421.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4971/1781/files/nasinaketoxekif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1675/7153/files/kipif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1559/4393/files/timoresojitepa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3123/2674/files/govupinilinediw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2044/3045/files/158552975.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8032/7076/files/38324524994.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5564/3814/files/28047509816.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_off0000a532.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA532 5236 bytes
SHA-256: 20df2f36d7916285a10fa9e9a16f22902a445282ceb719fb12442ef84323a139
font_01_sfnt_off0000b72d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB72D 15340 bytes
SHA-256: b0a6b18df548d3131d79a1a7768ef8cfb945e709a244a38dd8b4d0c471cb7f99

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