Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c11d532bcf52543…

MALICIOUS

PDF

43.2 KB Created: 2020-08-15 00:44:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2ab120b3e7f395aea547ad09308aefa5 SHA-1: b12c790558b42cf41736ea608afc6123a093db37 SHA-256: 2c11d532bcf5254337ea62dc010cdce08463ad62e5cc14c867cf9171705e1cad
214 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One critical heuristic identified a link to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains references to these URLs and a QR code lure, suggesting an attempt to direct users to malicious content. The primary attack pattern involves a link farm designed to lead users to potentially harmful sites.

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.
  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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.ru/pify?keyword=manual+nobreak+apc+back-+ups+pro+1500 In PDF document text
    • http://monuture.countrypinedesigns.com/uploads/1/3/1/6/131606349/7d9188.pdfIn PDF document text
    • http://kabewalu.kamoauli.com/uploads/1/3/0/7/130776031/galatonunapivor.pdfIn PDF document text
    • http://xivov.crosstowncharityweek.org/uploads/1/3/0/9/130969173/kolenijir.pdfIn PDF document text
    • http://files.iowajuneteenth.org/uploads/1/3/2/6/132682929/5f7fa6a70e59f.pdfIn PDF document text
    • http://files.givengohockey.com/uploads/1/3/2/6/132695388/lirepogodokimov_kiguse.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/1/0432/1758/4283/files/rimuwakugorokakasokutus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6978/2693/files/abstract_data_type_in_data_structure_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2538/3073/files/dell_poweredge_fx2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4647/5678/files/faktor_risiko_penyakit_jantung_koroner.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5657/8212/files/luxugorowodakefojaleg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0200/3615/files/probability_exam_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2259/8823/files/92702930534.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/50751207741.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1892/7779/files/25851408685.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2756/0598/files/62642416674.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 2

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_off0000618f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x618F 5488 bytes
SHA-256: 7011f1fb4db8998c4945d2d523dd5139e2ba755769b5105a7125ee7dcff9690e
font_01_sfnt_off00007454.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7454 13968 bytes
SHA-256: 7a7ee98551838088f41f552fded295ae1629c9cb39f729064036047c3d364a6b

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