Malicious PDF — malware analysis report

Static analysis result for SHA-256 1852c8a742c189c7…

MALICIOUS

PDF

50.2 KB Created: 2020-08-09 05:32:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b59d0811fbd815ab20fcf28d07f8df2c SHA-1: fa1d1390a825ce974cdc462082f415bf9c2d077a SHA-256: 1852c8a742c189c752b68e166a5c0b5122053a73162a59a309397043b9cddeff
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service known for malicious activity. The primary redirector URL is https://ttraff.com/pify?keyword=accidente+vascular+isquemico+pdf, which likely serves as a lure for phishing or malware distribution. The ML classifier strongly indicated maliciousness, and the presence of a link farm suggests an attempt to manipulate search engine results for malicious purposes.

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.com/pify?keyword=accidente+vascular+isquemico+pdf In PDF document text
    • http://saguvubi.tfguillen.com/uploads/1/3/2/6/132682883/7853069.pdfIn PDF document text
    • http://files.denny-divinelanguage.com/uploads/1/3/0/8/130813747/1a08f6e54694c3.pdfIn PDF document text
    • http://files.felicitasdoula.com/uploads/1/3/1/6/131606537/vazez-pexajano-sagotegojof.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/1/0432/4406/0839/files/application_of_genetic_engineering_in_health.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1615/9395/files/sovenuzepedilelizotij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1987/8048/files/learn_javascript_step_by_step.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7375/7603/files/74316563309.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0796/5341/files/complications_of_meconium_aspiration_syndrome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8220/3811/files/31221035998.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3835/1255/files/sitemibamo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8221/1735/files/14537747450.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9298/2427/files/us_history_workbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8991/2218/files/91578949750.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8376/7713/files/active_passive_voice_exercises_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1197/9939/files/cengage_unlimited_subscription_1_term.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6713/8470/files/62106346472.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 4

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_off0000801a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x801A 5476 bytes
SHA-256: 05cd90f0ac6a61398b569aa24b1adc7bbe0f05871f9ca482d0cc16120d90abff
font_01_sfnt_off000092ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92AB 12788 bytes
SHA-256: 0f0bc008ca6bb19b39da4d7236fb891e4f4480bee5d4d671a0b2c35554992e74

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