Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4b53e275b30c0b0…

MALICIOUS

PDF

34.6 KB Created: 2020-08-14 12:32:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6c4f2407fc8b95188d4cd091e63ff7f6 SHA-1: a1d4e55f0b9f5ac3f2d65fcd7b62e02b53ca0cbb SHA-256: e4b53e275b30c0b0d145048905b916f3ac48af636a0f2d75227a1f5462d7ade9
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one specifically pointing to a known malicious redirector. The document body text, though partially corrupted, includes the same suspicious URL, suggesting a lure to a malicious site. The presence of numerous PDF links, many hosted on Shopify, indicates a link farm strategy, likely for SEO poisoning or distributing malicious content.

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=ammi+ammi+video+song In PDF document text
    • http://files.sutterandassociates.com/uploads/1/3/1/3/131380175/subewun.pdfIn PDF document text
    • http://wizutom.expansiontheoryproductions.com/uploads/1/3/2/7/132741024/07e417fdba.pdfIn PDF document text
    • http://files.tungbrushph.com/uploads/1/3/0/7/130739996/9506972.pdfIn PDF document text
    • http://files.mauricesports.com/uploads/1/3/0/8/130873795/zipakagowewelab_wivirakukuru_jabun_rusilevibibekoz.pdfIn PDF document text
    • http://files.powerlandrealty.com/uploads/1/3/2/6/132681317/28c3cd58.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/1/0434/7399/3890/files/73269439588.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8273/5006/files/zoho_aptitude_questions_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6193/5261/files/millermatic_211_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2502/1603/files/baldur_s_gate_2_faq.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8326/7236/files/sekobixunefuwajuka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tadigepulimo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5430/1338/files/47171069230.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1540/4711/files/techos_verdes_tesis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/5578033559.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4800/0922/files/subwoofer_amplifier_circuit_diagram.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3818/6394/files/bituminous_pavement_construction.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6631/0299/files/34199871876.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1787/1255/files/best_mods_for_skyrim_special_edition.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_off000049fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49FE 5068 bytes
SHA-256: 9007af24adcb81ed63397e3cd62b7160de1b8e294e224430b86ada6e3b313101
font_01_sfnt_off00005b2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B2C 10104 bytes
SHA-256: 0d8521861c5796247f45ffd5017e1f7f670adb39cee12187f9c8a55afbeec4cd

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