Malicious PDF — malware analysis report

Static analysis result for SHA-256 89a8fb1750d4e88f…

MALICIOUS

PDF

45.5 KB Created: 2020-08-31 04:36:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 00699945129c90c8cc175d0ef6af00f9 SHA-1: e426e43760ec2868b7a451f3f6a258c053bd969a SHA-256: 89a8fb1750d4e88f11b99de1435b36c743ffcf62d3f30bea6936227b9d7cbe6f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that matches the redirector found in the heuristics. This suggests the PDF is designed to redirect users to malicious sites, likely for phishing or to download further malware.

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/wix?keyword=circuito+somador+completo+4+bits In PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In 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/1/0431/6289/4485/files/bipitexos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0292/9047/files/teledidikub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5172/6501/files/tous_les_accords_piano_jazz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2192/5543/files/proton_annunciator_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0357/6481/files/84352194723.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/3058/4984/files/bedava_porno_vido_indir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5175/9269/files/convert_file_online_for_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1882/0511/files/scanner_next_char.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3313/2184/files/jebojuxunokujogij.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a8ca0f_f756e0b8789948db9f43c58219c1ddb2.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/2e4eb4_f53bbb42b39749d4b67080b2c084574a.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ac51ce_e15c03aedd7b4eedac61d3adcca107f7.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/7ff653_f93bc9f086a744d987013792f562ecb9.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000693c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x693C 1768 bytes
SHA-256: 7b9c1ad248dcaef01c7adb4df71c22141da68cde87cc5ccff7cadb2d821898f4
font_01_sfnt_off000071e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71E2 5352 bytes
SHA-256: 99d340a56543f96ab388ff54d89b6f99b6f79dc4cb27c4f42cf4197abba991c6
font_02_sfnt_off000083f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83F0 10888 bytes
SHA-256: c74cc5369312212599b0397dcebd265c9cf1faf877990ebd7975cfc458940799

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