Malicious PDF — malware analysis report

Static analysis result for SHA-256 763798caea51b6a2…

MALICIOUS

PDF

45.4 KB Created: 2020-08-14 12:28:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 74d48bb1b383e9fd26855fa6d051210a SHA-1: 2d6870d0e104895a4512302816b42c3d8fe3b4c8 SHA-256: 763798caea51b6a2f61a114f7fd55516c8ebf42f390950cae301f99d0286fb72
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a large number of embedded links, many of which point to a redirector service known to host malicious content. The document body, though heavily obfuscated, contains a URL that matches the identified redirector. This suggests the document is designed to lead users to malicious websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=top+offline+navigation+apps+for+android In PDF document text
    • http://files.warriorheartedmom.org/uploads/1/3/0/9/130969469/wexibufidavusevasu.pdfIn PDF document text
    • http://vasemowe.parklandhsband.com/uploads/1/3/0/8/130874058/mozijabodub.pdfIn PDF document text
    • http://finagefa.anewreligion.net/uploads/1/3/0/8/130874038/jepararoto_fazozigotosuvu_muwenu.pdfIn PDF document text
    • http://wupiwiwag.chattanoogaumc.org/uploads/1/3/1/4/131483281/xagigu.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/1/0430/7668/1882/files/definition_of_differential_calculus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7661/6341/files/wabowaride.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3603/0614/files/4423149691.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/b_r_automation_studio_4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3477/1610/files/miwodegiduvilovazu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2648/9249/files/89153727737.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0870/4164/files/37252329565.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5115/5618/files/25363028366.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8938/5888/files/german_shepherd_training_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8617/5651/files/equipe_village.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/4064/7841/files/94745330170.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/11411440246.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7519/0430/files/arduino_code_guide_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/83583068491.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 2

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_off00007316.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7316 5216 bytes
SHA-256: 9ed5a947bb3c63bff3da3a32e13f4b300b9b834460dcae3c72c676e81c3dcb8b
font_01_sfnt_off000084eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84EB 10288 bytes
SHA-256: 47209e615db0a6f8cee8f6e468c3d569501fe6d4066433669be75093a8f036b4

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