Malicious PDF — malware analysis report

Static analysis result for SHA-256 5abcdcf3097b42c6…

MALICIOUS

PDF

37.1 KB Created: 2020-08-22 17:13:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d24ceaa7d043560b34c9a92187d9042f SHA-1: c9b2ecdd91986b50ed9937b2ade91626261133ec SHA-256: 5abcdcf3097b42c6d4e8a66dc987e9f7db4d6ebcfa8e554ac8aea41f956af218
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service that is known to host malicious content. The document body also contains a direct link to this redirector, suggesting a phishing or scam attempt disguised as a free download. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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=solving+rational+inequalities+with+answer In PDF document text
    • http://files.tobyupci.com/uploads/1/3/2/6/132696018/100ff90e6acca6.pdfIn PDF document text
    • http://files.mhaplanningforsuccess.com/uploads/1/3/1/3/131384424/9346303.pdfIn PDF document text
    • http://files.kidsconnection-childcare.com/uploads/1/3/2/3/132302718/59f650.pdfIn PDF document text
    • http://files.carolynmartinodesign.com/uploads/1/3/0/8/130814858/7dd71f42.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/1/0433/9531/7918/files/charpy_test_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5864/1573/files/assured_tenancy_agreement.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0401/8336/files/sokuxamitul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9291/1007/files/uc_browser_apk_mini.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3363/2661/files/asiana_airlines_uniform.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7142/9016/files/apologize_piano_sheet_music_easy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2351/5294/files/ponamipalupitumidolixa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2505/5387/files/bar_rust_235.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8116/9051/files/ordo_hemiptera.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000055a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55A0 5328 bytes
SHA-256: eb95e356853526d8461ad459841b182c260b945f4d7278a013572519fffe5308
font_01_sfnt_off000067c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67C7 9376 bytes
SHA-256: a2b44b175abad0255079eb65919d55f559acd14fcbcdb43ea12b196ad4969375

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