Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a1d8966b869964d…

MALICIOUS

PDF

44.1 KB Created: 2020-08-20 22:57:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5eaa622150dcb86bd93638eae089676e SHA-1: 388a8cbadfc302a169c3561f1b354c2134441b8c SHA-256: 0a1d8966b869964de31ac8c42a1bbb671fea879e9211ee6a6f5246abb9e7857f
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 as a redirector for SEO link farming. The document body, though heavily obfuscated, contains a URL that points to a potentially malicious redirector. This suggests the document's primary purpose is to lure users to a malicious site, likely for phishing or malware distribution.

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=algebra+word+problems+worksheets+for+grade+6 In PDF document text
    • http://files.icgrenoble.org/uploads/1/3/1/4/131406491/nexolimipiduv.pdfIn PDF document text
    • http://files.sisiholisticbeauty.com/uploads/1/3/1/4/131438571/bovigevudo.pdfIn PDF document text
    • http://files.eliseblackwrites.com/uploads/1/3/1/3/131381612/31c5308.pdfIn PDF document text
    • http://files.premiumrvtrader.com/uploads/1/3/1/1/131164386/891377b83360.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/1/0436/0945/6803/files/92147521978.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1030/7749/files/66154114156.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5746/3964/files/84468773854.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6246/8516/files/lagededuxoga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3939/7790/files/curso_de_apicultura.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8130/9085/files/sutidufeviber.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5425/9610/files/wp_engine_disallowed_plugins.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7870/3511/files/gudosiwaxexobipo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1161/8462/files/john_deere_335.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8728/0790/files/autocad_for_windows_7_64_bit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0677/0849/files/possessive_nouns_worksheets_grade_4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8520/7454/files/86995459327.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9050/2051/files/panurufevini.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 5

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_off00006afb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AFB 5896 bytes
SHA-256: 3c7a96a9ec0f6d3dbb3a3d2f7ee094c7028772ae31c4ed80e8701285c8fb8b36
font_01_sfnt_off00007ef3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EF3 10604 bytes
SHA-256: a7352282cdb7ff208b0412167670fd8010fe6ab93fbacad6afd43c2103331d99

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