Malicious PDF — malware analysis report

Static analysis result for SHA-256 099ec5a182aeac7a…

MALICIOUS

PDF

70.6 KB Created: 2020-09-16 13:47:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c1d9ba252e314973f9c33a80bffc18c9 SHA-1: a894edfa9a59fe0b4caa25ae84a9095a35394976 SHA-256: 099ec5a182aeac7a2c5f7231d63d03e7b4f6125629bda0fc7bf5e84fec5ae359
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links and a visible URL in the document body that point to known malicious redirector infrastructure. Heuristic firings indicate this is a link farm designed to redirect users, likely for phishing or malware delivery. The ML classifier also strongly flagged this PDF as malicious.

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.club/wix?keyword=create+a+critter+cricut+cartridge+images In PDF document text
    • http://files.biasranch.com/uploads/1/3/1/4/131453684/tafaw.pdfIn PDF document text
    • http://noxevu.enfieldctbouncehouserentals.com/uploads/1/3/0/8/130813835/ruwuxufo.pdfIn PDF document text
    • http://files.fxbrwanda.org/uploads/1/3/0/9/130969809/tubetavowavamoz_ferorilobu.pdfIn PDF document text
    • http://lituk.blinkchildrensartstudio.com/uploads/1/3/0/9/130969110/naxexepulunalal_lufadakovajuso_xupexed.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/1/0438/6743/9259/files/tufumasekizajomovuve.pdfIn PDF document text
    • https://602d76cf-39b8-4805-a783-f5e529798ba1.filesusr.com/ugd/227d0f_41dc10072f704395a14aa51aa71f922f.pdf?index=trueIn PDF document text
    • https://26b34fd8-5e4e-4a3e-bfea-e1d5681bf8f2.filesusr.com/ugd/dcf311_dfcc6cb60d834e718fb75d14b693fad0.pdf?index=trueIn PDF document text
    • https://d33ba8b3-a666-4303-9248-0610a85f1f8e.filesusr.com/ugd/2994dd_d1cc7326e39349f4938ea291edcefcf0.pdf?index=trueIn PDF document text
    • https://e0775da4-1a80-41a3-bcce-284b244ef21b.filesusr.com/ugd/4329d7_001af320dbbd4db6aa9f83f99b4402a5.pdf?index=trueIn PDF document text
    • https://9c05afd2-1a8b-43f5-adf8-0587100365ff.filesusr.com/ugd/b463f2_8bf53c5d9c8b4613a31019dbfdb534de.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7003/7924/files/introduccin_a_la_administracin_mod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3198/5309/files/vampire_the_masquerade_bloodlines_2_pc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8752/8103/files/best_reader_for_windows_10_64_bit.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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_off0000b2e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2E1 5132 bytes
SHA-256: 8e2e4e71608f69c34f5c0ffd58776968d1e24fc16a5e74dfd960fdeed90174e4
font_01_sfnt_off0000c439.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC439 16488 bytes
SHA-256: a38e017a168f62d1f145c3a9792e55e690736d977ccb967f1fff6df2bfa79f67
font_02_sfnt_off0000f742.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF742 16388 bytes
SHA-256: a4f616c8ed03231f927c8f6725ddfb6aed79ba1e9c0c9257d690ec40f184d4cc

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