Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ab0baa76598dd9f…

MALICIOUS

PDF

46.9 KB Created: 2020-08-08 07:58:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d428a6fd7a3d2d343b06388247b0c933 SHA-1: eb7e3fd974d78c25e0bbe4eeef3aef8df49450e4 SHA-256: 8ab0baa76598dd9fad2dea45b0dd13bd89f17352d079087f943b62f188eb69ba
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, which is the primary attack vector. The document body and embedded URLs suggest a lure to download a PDF, but the actual content is obfuscated and likely intended to redirect the user to malicious infrastructure. The ML classifier strongly supports the malicious verdict.

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=pardoner+s+tale+pdf In PDF document text
    • http://jukisepi.thingsgreen.com/uploads/1/3/1/8/131856318/kumibevisa-xoraluverubadu-pezuxisu-tigukoguvuzi.pdfIn PDF document text
    • http://files.ps173q.com/uploads/1/3/1/3/131383748/nogovawuwe.pdfIn PDF document text
    • http://mosolelag.ghanavenothan.com/uploads/1/3/2/7/132740214/gemukovoki_mafuxe_mopagof.pdfIn PDF document text
    • http://files.vinoandveritas.com/uploads/1/3/0/7/130776745/bodorumeludevopaki.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/1/0428/9835/8432/files/texirid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3333/7768/files/40026314921.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/54313135065.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0142/9662/files/somas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2684/9700/files/wuwesivotimonuxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4874/6651/files/editable_calendar_october_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6563/8050/files/bunchems_instruction_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/89965927340.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6341/0845/files/bajuriwokewusekitilaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1491/3191/files/baneselirexoji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/59677855830.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6410/5886/files/xanadowebow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7514/1783/files/romedifesub.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_off00007b66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B66 5036 bytes
SHA-256: 07795958ddb39d35bcc3c1f644fdcdb6b3261374c76fc606b5307a724295e8fc
font_01_sfnt_off00008c93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C93 10024 bytes
SHA-256: a30b9352e76925784e893c73549fa67478aa7b4ffb9261109690396e38141bea

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