Malicious PDF — malware analysis report

Static analysis result for SHA-256 f16378104d670992…

MALICIOUS

PDF

59.0 KB Created: 2020-08-12 02:04:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0ae79ccd5614af6062d1c9d5eda07b07 SHA-1: 2c7e92ec9d580a3d0b41a843cf3d4ab6d0cc2454 SHA-256: f16378104d670992e33f2cce6b6b83b86845c0203377a913c77a2286dc7031e4
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the text 'Status asthmaticus treatment guidelines pdf' and the malicious URL, suggesting a lure to trick users into clicking the link. The ML classifier also strongly indicated maliciousness.

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=status+asthmaticus+treatment+guidelines+pdf In PDF document text
    • http://files.trinitybergenlutheranchurch.org/uploads/1/3/1/3/131379320/7210037.pdfIn PDF document text
    • http://files.wmclb.org/uploads/1/3/0/9/130969965/4254045.pdfIn PDF document text
    • http://files.donaldtrumpacunt.com/uploads/1/3/0/7/130739379/jutovanaja.pdfIn PDF document text
    • http://files.sinaitoys.com/uploads/1/3/1/6/131636956/fokowaropanadifez.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/1/0430/2094/3523/files/2020_year_telugu_calendar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5296/6812/files/inkblot_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3592/6434/files/21290821372.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9066/4860/files/zurajakilori.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9930/8700/files/fusionner_les_documents.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61047377128.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2670/1718/files/natawalegubujivobi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6310/5953/files/15395_john_marshall_hwy_haymarket_va_20169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7221/5458/files/banderole_na_banknoty.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0716/5095/files/car_service_check_sheet.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_off0000a81a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA81A 5672 bytes
SHA-256: 7aaf9d17049b1ab71dfa7db7d86a0105322c74ade2eecf23d54a2b28d9119a89
font_01_sfnt_off0000bb34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB34 10304 bytes
SHA-256: 3dae9f5857f12e8f083178480bc8ccf562ae9b512a9e8f3fff5c7d88cf2a20fd

Open this report in the interactive analyzer, or submit your own file for analysis.