Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4e5307232f9d147…

MALICIOUS

PDF

57.5 KB Created: 2020-08-12 06:11:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f8af8e54e2568e6e37422969322215cd SHA-1: 66dda48a8ead167c4d5ab0e516ab4ede1ed4b48e SHA-256: a4e5307232f9d147582c16de59e091837e865d6d24f47a6950809385437f70df
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The ML classifier strongly indicated maliciousness. The primary attack vector appears to be a lure, directing users to the malicious URL 'https://ttraff.com/pify?keyword=murmurs+of+earth+carl+sagan+pdf' which likely leads to further malicious content or exploits.

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=murmurs+of+earth+carl+sagan+pdf In PDF document text
    • http://files.donahueindustries.com/uploads/1/3/0/8/130815026/13c748245c8e32.pdfIn PDF document text
    • http://files.mses2020.com/uploads/1/3/1/0/131070688/madesogiludonasedozu.pdfIn PDF document text
    • http://files.sharpnutrition.net/uploads/1/3/1/4/131483009/dawapo_mifopibivogezod.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/1/0434/8307/0629/files/78544378355.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4021/9047/files/79525304900.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2496/2968/files/budget_planning_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8245/7000/files/74499021422.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8052/3678/files/pasaxogupokebaraz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5905/9615/files/76137873530.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6245/2643/files/72722892104.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3957/2643/files/3878769135.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/pixarimatopexavebufegej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0453/1814/4155/files/sintomas_de_hernia_inguinal_estrangulada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/milirek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kevimofurerofujasopam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5193/4108/files/delegation_of_financial_power_rules_book.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_off0000a2ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2EE 5572 bytes
SHA-256: 30ab0b1edf34bdf8f6cdcaf344a12fcbcb6096fe0ae848fe6698747cfed74f8b
font_01_sfnt_off0000b5c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB5C9 10396 bytes
SHA-256: a030542d4366bd9db96ab12505bcee82608f609cc8de84aa110ac3ece541eeac

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