Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ef57546167a8928…

MALICIOUS

PDF

80.3 KB Created: 2020-08-22 10:03:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d58c36dd4471887a98593ef07b39c379 SHA-1: f1f6a1d06c0556ebc44c0354f8a66ec5110af7df SHA-256: 2ef57546167a892868b562e2213603feb4a37fc48caf11e4f4d3135a0190b8bf
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains heuristics indicating it is a malicious redirector and part of a link farm, specifically using an invoice/payment lure. The document body, though heavily obfuscated, contains a URL that is also flagged as a malicious redirector. This suggests the primary goal is to trick the user into clicking the link to visit the malicious site.

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=employment+guarantor+form+doc In PDF document text
    • http://files.lottglobal.com/uploads/1/3/1/3/131380043/vakotab-koteluta.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/1/0438/0894/8386/files/basketball_game_information.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9800/3874/files/popujizozimubefipido.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/3785448733.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5666/8573/files/94892334588.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7405/9430/files/godogulorogakarijikeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1634/8071/files/journal_articles_on_depression.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2436/7262/files/82683603989.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2401/5783/files/african_slavery_in_america.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/92588710477.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6500/6494/files/antibiotic_sensitivity_test_principle_and_procedure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1946/7932/files/bairnsdale_cinema_movie_guide.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 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5A3 2828 bytes
SHA-256: 85b692c1c636aed9ab1240d2a7361179fdd6c0849396a06064984f922e967b4f
font_01_sfnt_off0000ef9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF9D 5192 bytes
SHA-256: 8b7817339a31f68a1d63809c2995bd27bab784bfdca09d095d2eccfc94ccca36
font_02_sfnt_off00010137.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10137 10168 bytes
SHA-256: 09552f6377de67f760c54afdf0ddf5a01cddd4ed4f9383bc40e5f0d9ba76acba
font_03_sfnt_off000123c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123C0 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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