Malicious PDF — malware analysis report

Static analysis result for SHA-256 27481ce56c58f264…

MALICIOUS

PDF

66.6 KB Created: 2020-08-13 22:26:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 01df4e32597994a7d04fc94394fe1fc2 SHA-1: 60ad7068e76d332b70d3e3bd1887b0f71c474639 SHA-256: 27481ce56c58f264dacd6e708e25828a98535737518135e67476bd65714f24f4
234 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=graphene+nanosheets+sigma+aldrich'. Another critical heuristic indicates a PDF link farm, with the first URL pointing to 'https://cdn.shopify.com/s/files/1/0427/6027/4087/files/kavojekadub.pdf'. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains keywords related to the embedded links, suggesting a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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=graphene+nanosheets+sigma+aldrich In PDF document text
    • http://tasumos.jgmizrahi.com/uploads/1/3/1/4/131454415/nekagedefukopoda.pdfIn PDF document text
    • http://files.soulsearchrecords.com/uploads/1/3/2/6/132683154/ravomot.pdfIn PDF document text
    • http://files.themadisonchildhoodcancerfoundation.org/uploads/1/3/1/8/131871479/ripofajuba-kegor-walolodotavad.pdfIn PDF document text
    • http://files.decaledinc.com/uploads/1/3/1/6/131606281/vuwawezituxok.pdfIn PDF document text
    • http://sebosoru.thedragoncourt.org/uploads/1/3/1/3/131384201/803e812.pdfIn PDF document text
    • http://www.typoland.com/http://www.typoland.com/designers/Lukasz_Dziedzic/CopyrightIn PDF document text
    • http://www.typoland.com/In 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/1/0427/6027/4087/files/kavojekadub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1858/3192/files/pefer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1416/8480/files/vimunovajajufetologokadef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9128/7452/files/vugetifed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5736/2597/files/zijaronupuxopenurupa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1967/2472/files/dudosowo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3264/8597/files/calligraphy_practice_sheets_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9540/9311/files/wufidemezotakori.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4864/8354/files/xamabukusejomokuvusuwazum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5513/7447/files/12895398098.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6887/5157/files/10924357234.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5702/9019/files/73238883987.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9186/1412/files/fudafetaxodojatukukaziz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7130/5896/files/48910725009.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1795/3702/files/confederacy_of_dunces_summary.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b67c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB67C 6168 bytes
SHA-256: 8fa5fc47f1c4d577ade0a12cf104f8d2f5d8331d2d553a120b9eeba46afd7401
font_01_sfnt_off0000c61e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC61E 5520 bytes
SHA-256: fcf8beb26bfa6154dafe91c457a9686b507a63093380d203ca18a59d41e8444e
font_02_sfnt_off0000d8b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8B5 10484 bytes
SHA-256: e525be0f4185b7752a386e00323d35107330f1dfcf38bd0e37882936a7751bdb

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