Malicious PDF — malware analysis report

Static analysis result for SHA-256 36bcd3c41aafbba4…

MALICIOUS

PDF

45.5 KB Created: 2020-07-30 11:13:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ce4380373d2673dc933ef57e3b6ac9c0 SHA-1: 40dfa9bf331ade9f9181e5095dc27f501a1119b8 SHA-256: 36bcd3c41aafbba4e6db798d72a076fe75d94953c036a2685b6c781973ee1158
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating it is a malicious redirector and part of a link farm, designed to phish users. It embeds links that point to a redirector service, which in turn likely leads to malicious content or further phishing attempts. The ML classifier strongly supports the malicious nature of this 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=anthony+robbins+livros+pdf In PDF document text
    • http://files.nativeamericanfluteshop.com/uploads/1/3/1/8/131857390/9797345.pdfIn PDF document text
    • http://files.uno-corp-online.com/uploads/1/3/1/4/131453114/wejowikelokaw_wagavopifisi_konod_xavakotoxulade.pdfIn PDF document text
    • http://files.goldeneardigital.com/uploads/1/3/1/4/131438829/2801616.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/1/0433/0687/7080/files/53295895336.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/doworefobose.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9911/2099/files/repolepiduxigitavetox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2358/8773/files/22866071728.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2891/4074/files/26030915459.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1715/9335/files/nufabamowudo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4117/5190/files/32516396314.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5359/6310/files/xazoki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3395/1399/files/rumujejanaravejuduzamamiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lojuxefututa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8036/8796/files/xukupagoxenemu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7594/5113/files/zimubagezowarufoxig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9693/2505/files/17908070463.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 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69A7 2896 bytes
SHA-256: 9db0e3901db987b4a57b5dfd2af25e963b1a813f36787c0663a76c6e8b571177
font_01_sfnt_off000073e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73E8 4880 bytes
SHA-256: d263053dcb2689a505b91bc88bdce0191fb382e14618d197574cc2b4ba23c605
font_02_sfnt_off0000846f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x846F 10560 bytes
SHA-256: b1ee2522d1ed709ff624503571109c14757e5bb8ec57164448696c77ffe1a3d8

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