Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c710551ae48b674…

MALICIOUS

PDF

87.1 KB Created: 2020-07-30 23:08:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cd2493f4ae62b2ec3846dd1fc872185e SHA-1: 52c9ed4f5c63a4b352ca63a1a96c079fa39027c5 SHA-256: 8c710551ae48b6748586e8ed4ecad1f3e8954fd1779af39a630ba2680ac8763a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and embedded URLs suggest a lure to download further content, likely malicious. The ML classifier also strongly flagged this PDF as malicious. The primary attack pattern involves a deceptive link within the document.

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.com/pify?keyword=bard+tale+3+manual+pdf In PDF document text
    • http://files.authormlhamilton.net/uploads/1/3/1/3/131381078/sisola_gifev.pdfIn PDF document text
    • http://files.fbcfnh.com/uploads/1/3/0/8/130874097/niwosoze.pdfIn PDF document text
    • http://files.tshirtmart.com/uploads/1/3/1/4/131408581/0d1881b.pdfIn PDF document text
    • http://files.1uptoronto.org/uploads/1/3/0/8/130874382/rusurutiboxodu.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/1/0432/7600/9622/files/sugeleba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5167/9893/files/tufuguduwilevozalub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2639/0951/files/gerigadijajinenuval.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9291/8937/files/rerokosasuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4188/2265/files/78365537091.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8534/0580/files/55565553548.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/rudanibidew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0166/6969/files/puvujapumowotevasi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8026/9477/files/97321917593.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7877/9047/files/41245369217.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1064/4377/files/79331587098.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4235/4853/files/92385969891.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2136/8482/files/70127477077.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2652/0986/files/95408869009.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_off00011a00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A00 4944 bytes
SHA-256: 505e1ac6d3dbafbed74d911ef5ba7619eb0973855b8c88fe32b17b4666495702
font_01_sfnt_off00012ab4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AB4 10636 bytes
SHA-256: c7a9e70ce46801f3e9e9cd00c0815eca540b9c99374eb769a70344af500ba102

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