Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7d83664eaaf3ead…

MALICIOUS

PDF

60.5 KB Created: 2020-08-13 03:22:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 57baf2f743ec14bf292f3e9b3f232c26 SHA-1: 9c681cd653df4d6ccf531a0211dbc40df091a3c5 SHA-256: e7d83664eaaf3ead658f00f933ceec46d53bd74d27ac8d4d9e6167e207311819
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link and a link farm, indicating a social engineering attempt. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/wb?keyword=general%20veterinary%20parasitology%20pdf, which is also flagged as malicious. The presence of numerous external links, including one to a Shopify domain, suggests an attempt to drive traffic to malicious infrastructure.

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/wb?keyword=general%20veterinary%20parasitology%20pdf In PDF document text
    • http://files.beritgehrke.com/uploads/1/3/0/7/130775393/a2f309.pdfIn PDF document text
    • http://files.recrates.co/uploads/1/3/1/8/131857315/3163430.pdfIn PDF document text
    • http://files.chrispickettceramics.com/uploads/1/3/1/6/131637081/fozukupoku_malido_fupemerux.pdfIn PDF document text
    • http://puvokika.missinglinkbrewery.com/uploads/1/3/0/7/130775627/9320005.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/1/0451/3693/7125/files/excell_pressure_washer_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5765/0584/files/asthma_guidelines_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1382/4927/files/47494622888.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2762/0249/files/setofesoxivefap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/0825/8211/files/promissory_note_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8583/2096/files/fuseperewexuzevetekid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9587/3949/files/bhrashtachar_essay_in_marathi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5158/8507/files/when_we_dead_awaken_adrienne_rich.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/3152232763.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9245/8139/files/60762839397.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8094/1721/files/88499060286.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5969/2198/files/install_scikit_learn.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 5

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_off0000af96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF96 5404 bytes
SHA-256: 6cc9e4502c1d2a5c694efa9f963bbe950e3a077422436babfa834d28423105ee
font_01_sfnt_off0000c217.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC217 10068 bytes
SHA-256: fbe9fced7fe18b28e7fa2559c3f1a5498b628211e90adf222d21b24cb7b9088a

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