Malicious PDF — malware analysis report

Static analysis result for SHA-256 64bc6dd5fee77185…

MALICIOUS

PDF

53.2 KB Created: 2020-08-08 13:07:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ba1a2c2631104e9f98ed6e796c00bf51 SHA-1: 33c6a007784041aac8b68731f8cf4f1d6951b457 SHA-256: 64bc6dd5fee77185ecb32925819de5fc56ce14f3da2e8aaa780fbfb21c2e48a0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many of which point to a redirector service that is known to host malicious content. The document body itself contains a link to this redirector, suggesting an attempt to lure users to a malicious site under the guise of a PDF document. 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=amplificateur+diff%25C3%25A9rentiel+pdf In PDF document text
    • http://files.generationxgoesglobal.com/uploads/1/3/0/7/130776661/df483078bdee30.pdfIn PDF document text
    • http://files.cveducators.org/uploads/1/3/2/6/132681969/xuzel-kixijukusa-zudevod.pdfIn PDF document text
    • http://files.sedistrictpaha.com/uploads/1/3/1/3/131381679/pobox_fobedujanojuto_nobovorasilux_bisawir.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/1/0428/1732/3175/files/88737460901.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2832/4257/files/97141388771.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6550/5952/files/present_past_tense_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1104/7575/files/32044957974.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1407/9143/files/xujanedima.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3552/5282/files/defavowenim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5083/4847/files/java_programming_balaguruswamy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7737/8972/files/16991770291.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6515/6508/files/26119940430.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/tifakupazotinopitos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9945/4629/files/statistics_class_11.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2076/3804/files/maxuvamafazebuto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5637/3659/files/27629129478.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/mufepifirelutubuxuxo.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_off0000813d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x813D 5252 bytes
SHA-256: ad1cedcf15f49bc7ed2830de0f728c3756325eab826c70cbd2fb54f82fc32b1f
font_01_sfnt_off000092c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92C4 17148 bytes
SHA-256: 42ec7e0e34e998d728329b625c8130ad2c7486e2ea683919418337bcc187bfa4

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