Malicious PDF — malware analysis report

Static analysis result for SHA-256 63e88bbe33c4cf9c…

MALICIOUS

PDF

43.6 KB Created: 2020-08-14 16:23:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9c29c59c51747080c40e805d4ebfffd4 SHA-1: 51cf73e6a8ebb9cd05ba3e888408b9b869163819 SHA-256: 63e88bbe33c4cf9c7979b8ce48901d32972cfd20184142178b252f7545998dda
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a malicious URL, identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' heuristics. The document body, though heavily obfuscated, contains text that appears to be a lure for a "d d 5e online character sheet" which points to the malicious redirector. The ML classifier also strongly indicated maliciousness.

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.ru/pify?keyword=d+d+5e+online+character+sheet In PDF document text
    • http://files.seattlefieldhockeysocial.com/uploads/1/3/1/6/131606346/2663518.pdfIn PDF document text
    • http://gixoli.tylermany.com/uploads/1/3/1/6/131637814/5100674.pdfIn PDF document text
    • http://zabom.miriad-tech.com/uploads/1/3/1/4/131406717/5101392.pdfIn PDF document text
    • http://gugesiw.filmnarrative.com/uploads/1/3/0/7/130738799/fadivujolos_fenirefipiz_vonelefobofo.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/1/0429/5399/8487/files/search_engine_optimization_marketing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2381/0203/files/povutafez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9276/2006/files/lamunoguxokorakosu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/poxusulijupidokubeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5921/6533/files/mercator_map_projection.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0009/3083/files/fudotofejajog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2123/6386/files/soul_worker_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7306/1532/files/jadozosi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9956/9829/files/14692475131.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3415/5928/files/power_of_attorney_act_1982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5732/2903/files/38553240265.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_off00005f9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F9D 5152 bytes
SHA-256: 71d60584b75ac716a37c1a91dbb46a206462bff381b98b357c3618f6c712ed84
font_01_sfnt_off00007112.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7112 15880 bytes
SHA-256: 68aa959f4051338fb6c149c74af7c1cec4d459622e268c888feeebea89c14747

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