Malicious PDF — malware analysis report

Static analysis result for SHA-256 e780a01c37e4a7ea…

MALICIOUS

PDF

42.1 KB Created: 2020-08-04 13:54:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b6e441ab467da12673c2fa4647564d54 SHA-1: bf169bdac5a9737d6b7b027d0e9df700ab08222b SHA-256: e780a01c37e4a7ea68d8155e6a81c7cb1845a92f3cb00cd724224245226166a8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a book title and the PDF creation tool, suggesting a lure. The heuristic firings indicate the PDF is designed as a link farm to malicious infrastructure, likely to redirect users to further malicious content or phishing pages.

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/pify?keyword=a+practical+english+grammar+4th+edition+pdf In PDF document text
    • http://files.vintageindustriesinc.com/uploads/1/3/2/6/132695663/kabobutidetos.pdfIn PDF document text
    • http://files.calumandkimstuart.com/uploads/1/3/0/7/130775372/6276696.pdfIn PDF document text
    • http://files.readingfamilyaid.org/uploads/1/3/0/9/130969965/3306600.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/1/0429/8863/4263/files/46989312288.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8864/2197/files/ruxasaboguzupege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1048/8477/files/60504489338.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2688/9374/files/14236383401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4337/2703/files/amtrak_empire_builder_schedule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0826/1276/files/58898794801.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9937/4233/files/11672080416.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8549/6469/files/tipufijineluwaluru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4179/0871/files/44721050875.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4420/8797/files/jifemelitesalelofa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/24370467333.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_off000065be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65BE 5648 bytes
SHA-256: f35d338af140166c8123207abfbbebccc1df19105c86be3c62be3615d51d1bcf
font_01_sfnt_off000078c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78C8 10152 bytes
SHA-256: 77e495acd85ec952688728d7d9451a98d89b069b2934cad724dc65dcd46d4a92

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