Malicious PDF — malware analysis report

Static analysis result for SHA-256 bed4667625fead5e…

MALICIOUS

PDF

39.0 KB Created: 2020-08-31 14:29:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fe6302f3d97cb474b3ce951fd0db1a12 SHA-1: 9a1a4badb7fea432282b32a9f33a59d167cba3af SHA-256: bed4667625fead5e241561af0d093df608293d256ad91f4a8fef30eec91fc873
194 Risk Score

Malware Insights

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

The PDF contains a link farm with 15 external links, including a redirector to a known malicious URL. The document body, though heavily obfuscated, contains the malicious URL. This indicates the document's primary purpose is to lure the user 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.ru/wix?keyword=beautiful+liar+audio In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_c69bc9f6b1d746459ab5fe9d771c4fa2.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_3a157940a3f544febec2083513d0072b.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_a36c8583f62e4a5581e4a3c14d6868a1.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/bdeb4c_c489cd26fe1f4bddacccdf6d4b51c3dd.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_784bfa14201d4a65a47962ecca116fc2.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/0fdb6d_6af70bce4e7d43f6a424472fff9b6e49.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/6290de_10751455446c49efb149bf04c6f7ef57.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_8d82c79d688e4fb28c8073b1860b3c42.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9682/6273/files/xidezofuxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/3006/3773/files/23882668345.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3505/7566/files/dictionary_pronunciation_guides.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/4989/8399/files/benzodiazepinas_anestesiologia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8904/4383/files/makagogotibizisosipobemum.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/f55bec_fa40825c5c1b4f55a158b1a3a9941b47.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/3cb679_7d8f80037cbc4bb787d5b4ac5b8f5092.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 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000522b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x522B 4772 bytes
SHA-256: a1ab41a22534b49c26dc7e95e9bc3a15fcb4673510a6027c9c34a550523bbcfb
font_01_sfnt_off0000626c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x626C 1964 bytes
SHA-256: 4124f772d75de2e757d66273de45ab67d1472cce93aafc68bf24d7cdb8923c6c
font_02_sfnt_off00006bc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC5 10192 bytes
SHA-256: 3a7428c786f5a074ccd3dc1882324f62a0ca36f9eeeddb0eda0d86cee6f64cdf

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