Malicious PDF — malware analysis report

Static analysis result for SHA-256 65e2bd8ac82bd472…

MALICIOUS

PDF

48.0 KB Created: 2020-07-30 23:15:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c9e9e1902486ae82896ab62724ae75eb SHA-1: 5a3dea21e5bd821db38ac270c6a4d87784a824af SHA-256: 65e2bd8ac82bd472e97cfebd591b06d709cf22171b5f8ced9d74d4243874f6c8
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which point to a redirector service known for malicious activity. The ML classifier strongly indicates maliciousness, and the presence of a link farm suggests an attempt to distribute malicious content or phish users. No scripts were extracted, but the primary attack vector appears to be the embedded malicious links.

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=bryum+argenteum+pdf In PDF document text
    • http://files.wolfesearchgroup.com/uploads/1/3/1/3/131398010/niwokomaxotewefo.pdfIn PDF document text
    • http://files.radsinternational.com/uploads/1/3/2/7/132712006/kerasivimo_tuwuridusuxig.pdfIn PDF document text
    • http://files.thejonesfarmvt.com/uploads/1/3/0/7/130740033/897e63b2f0401.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/1/0429/8070/4405/files/86422561520.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6797/4556/files/pumirumevoxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2211/3192/files/lifazenidenisanelozog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7945/0272/files/15555512200.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pamuzinesikajojefex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8893/7120/files/notetufukapumunuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3426/3199/files/81654097138.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0015/8632/files/87833138374.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0473/8206/files/dipakikulewefamezigop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0590/1991/files/fewarumanomosilosaritu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1988/7001/files/tabimegawaxediziruf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6202/5624/files/42913082451.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6219/0489/files/47236378763.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9086/0437/files/40962075026.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4184/8470/files/72480724584.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 3

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_off00007a3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A3B 5024 bytes
SHA-256: 849387bc273cd01fff97691cc8063274dd46092bd8fbab9ec5d661f9f0ad2fa8
font_01_sfnt_off00008b39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B39 12412 bytes
SHA-256: 3d0dc5e49d140f9d4d71137c5a74f2cdfa234a81c58495a96acefc26c3bc7e12

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