Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d0cd9821df186f8…

MALICIOUS

PDF

41.3 KB Created: 2020-08-19 13:26:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6ff9a35755b19b7c1543a3475591f36e SHA-1: 3433c6e4c213f003fbbedcf9a69424febcba7f03 SHA-256: 6d0cd9821df186f8096307f0fef06dec82e460eab2a9d5fa8bf69c413fbbcf86
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one prominent URL leading to a redirector known for malicious activity. The document body, though partially corrupted, includes the same redirector URL and references a book title, suggesting a phishing lure for free downloads. The ML classifier strongly indicates maliciousness, and the heuristics confirm the use of redirector links for SEO-based phishing.

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=livro+androides+sonham+com+ovelhas+eletricas+pdf In PDF document text
    • http://files.sanclementecarpetclean.com/uploads/1/3/0/7/130775229/tokowutoxexoputix.pdfIn PDF document text
    • http://jetop.porterpottery.com/uploads/1/3/0/9/130969060/vixopakug.pdfIn PDF document text
    • http://pigiweg.wellbridgehealthessentials.com/uploads/1/3/1/3/131398351/8497978.pdfIn PDF document text
    • http://safozimur.untitledulysses.com/uploads/1/3/1/4/131438641/punorimunare.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9493/1624/files/22378880548.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7309/3288/files/jegadus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1152/1187/files/dnd_5e_divine_sense.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0476/4068/files/67145600712.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9229/3272/files/11652118503.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3179/5624/files/87941577324.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1385/7692/files/bopimo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9123/7791/files/8956873072.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0065/9100/files/powalowatiwini.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6563/9069/files/adjuvant_vaccine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1361/0392/files/72906029345.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4047/2229/files/xexobevegejab.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 1

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_off000054c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54C1 5184 bytes
SHA-256: 796ca3fc9b3902e5c736da7382f4d722bd6da2fcc19da6105fe1669954144e89
font_01_sfnt_off00006638.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6638 10476 bytes
SHA-256: f677b43e012f0c8f90153cc64ec969103359d4da388eb17d36c6c48241f97359
font_02_sfnt_off00008990.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8990 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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