Malicious PDF — malware analysis report

Static analysis result for SHA-256 720ea9c8af574d03…

MALICIOUS

PDF

46.0 KB Created: 2020-08-25 14:22:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0ccfe2756829094e03b415496c723776 SHA-1: 8822424e531b52315ff0d114c7a3f231587698a1 SHA-256: 720ea9c8af574d03e99158be8bf32014fce053c78519241a0a4fb1ae27444d19
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, including one identified as a malicious redirector, designed to lead users to potentially harmful content. The document body text and heuristics indicate a lure for free downloads, which is a common tactic for phishing or malware distribution. The ML classifier strongly supports the malicious nature of this PDF.

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=say+something+piano+chords+sheet+music+free In PDF document text
    • http://diripaki.braemarmensclub.com/uploads/1/3/1/4/131438563/1693716.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4241/4492/files/livre_guide_du_routard_espagne.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1975/4907/files/92361116021.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8547/0627/files/bosagapubemutivozukolu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9888/9635/files/irrigation_engineering.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nijudesiko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7940/1634/files/avik_sarkar_bhog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/6975/5812/files/40th_birthday_party_invite_template_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3155/1400/files/characteristics_of_a_good_research_proposal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9147/6133/files/18907516852.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1731/3178/files/20491613847.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9174/5175/files/difference_between_alternator_and_generator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1785/4373/files/58116694107.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9235/1907/files/todaxatozasimefegod.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 1

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_off00005b97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B97 5624 bytes
SHA-256: fc0698294cb3f25e30d17b1cd8cde455184960437c471ef02e28901cb4f83c2b
font_01_sfnt_off00006e8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E8B 14580 bytes
SHA-256: 8db1900020391ba150ab6a79f3191a30fe098a912e3ce43f79eb9ba5b0c6f56c
font_02_sfnt_off00009cc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CC8 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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