Malicious PDF — malware analysis report

Static analysis result for SHA-256 52c185c982d4b2ba…

MALICIOUS

PDF

36.9 KB Created: 2020-08-25 22:52:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 80d51832696a3d763515d6ce2d75f583 SHA-1: 49e4c820c46fdf9d8a5425337995d8b9dac4e681 SHA-256: 52c185c982d4b2baa354f68d06a0b4bb2abb543f19b4d423a84a0e90609189d3
194 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, a technique often used for SEO poisoning or to direct users to malicious sites. One of the primary links, 'https://ttraff.cc/pify?keyword=los+siete+habitos+de+los+adolescentes+altamente+efectiva', is identified as a known malicious redirector. The document body, though partially corrupted, includes the title 'Los siete habitos de los adolescentes altamente efectiva', suggesting a lure to disguise the malicious intent. The presence of numerous links, including the malicious redirector, indicates a strong likelihood of an attempt to lead the user to a compromised or malicious resource.

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=los+siete+habitos+de+los+adolescentes+altamente+efectiva In PDF document text
    • http://files.enigmahealth.com/uploads/1/3/2/7/132740541/dodatunodiv_vizixizawe_gajeb_nebelu.pdfIn PDF document text
    • http://files.bluemountainsafricanvioletsaus.com/uploads/1/3/1/4/131452958/buvelafuvozag_badavag_zixib_vulanujerizitex.pdfIn PDF document text
    • http://koriwudi.abellcable.com/uploads/1/3/2/8/132815806/4180883.pdfIn PDF document text
    • http://files.computerclubrhcc.com/uploads/1/3/1/4/131437276/8058813.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/1/0435/5129/3603/files/juzodabepanagelug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2293/4435/files/95422891989.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1341/3791/files/nelufugurudogalig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4246/4163/files/jikejenonuriberokoka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6051/0376/files/tirebudokinodesitatugukop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5109/6984/files/47484418861.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0221/5074/files/7010579072.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7247/0686/files/pivelusimimobajugaku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0963/8553/files/antisocial_y_asocial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2394/9224/files/consumer_reports_laptop_computer_review.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_off0000519d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x519D 5308 bytes
SHA-256: c121a0e4904a00e9579022d829497833e9fe4fd9fa0596df6b9feb9bba85c005
font_01_sfnt_off0000638d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x638D 10100 bytes
SHA-256: 7b5176cb293ad2cc5ff501490ddc0649e97d1c545943f7d1c65e3fe6688a2fdf

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