Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e8bf181803dbc4d…

MALICIOUS

PDF

51.2 KB Created: 2020-08-04 15:31:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: de902e70c1c3deee258dca7ea81b7665 SHA-1: 62f47048be5d48c7e90200c8774a59de146ba1c8 SHA-256: 7e8bf181803dbc4d78341d3d3b018dc448d5bc79d5598d6b1daed642b6ff4269
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service, indicating an attempt to drive traffic to malicious content. The primary redirector URL is identified as malicious, suggesting a phishing or scam lure. The document body itself contains obfuscated text and links, reinforcing the malicious intent.

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.ru/pify?keyword=atoms+molecules+and+ions+questions+and+answers+pdf In PDF document text
    • http://files.kathleenhilchey.com/uploads/1/3/2/6/132695714/f913c82fa1a382.pdfIn PDF document text
    • http://files.uniarq.net/uploads/1/3/2/7/132740435/7482373.pdfIn PDF document text
    • http://files.gulfcoasteventsllc.com/uploads/1/3/2/6/132695568/4ab473a7d826.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/1/0432/8259/6004/files/wabewenimirumel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dusegu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3989/0327/files/66229290251.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1157/8776/files/11645001125.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9540/7269/files/veximajowogema.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6916/1110/files/a_arte_de_ter_razo_arthur_schopenhauer_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2951/0814/files/24690443623.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7871/2472/files/20599917073.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3640/8982/files/lurilajusofam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9733/3668/files/dorixa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/4022/3911/files/multiplying_integers_worksheet_grade_6.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6955/4332/files/wekemazedob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2682/4859/files/10405514283.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_off0000838f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x838F 5508 bytes
SHA-256: 72e664a3e780a26a1f364a86e75905abdf846f2167e3cc6f24f3ecd8c6ffcffe
font_01_sfnt_off00009642.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9642 12820 bytes
SHA-256: 1b890e250c98c763f8dd973e256c82e01a365d4adbe67a87fd46575b92758b56

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