Malicious PDF — malware analysis report

Static analysis result for SHA-256 6921adcf7b55480c…

MALICIOUS

PDF

43.5 KB Created: 2020-09-09 16:59:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c2b54512cb46d4b42c125d279f615952 SHA-1: 88e0dfc6a8ea72594ef2e5e16535f8134c8574be SHA-256: 6921adcf7b55480cd768d37f81bbe7150861654c92c96118a548b4767250ae41
194 Risk Score

Malware Insights

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

The PDF contains a link to a redirector disguised as a government form, which is a common lure for phishing or malware. The PDF also contains a large number of links to external PDFs, many of which are hosted on benign domains but are likely part of a link farm to improve SEO for malicious content. The ML classifier 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.me/wix?keyword=khadya+suraksha+yojana+rajasthan+form In PDF document text
    • http://suwomi.greenhectares.org/uploads/1/3/1/4/131410007/bulokivekok.pdfIn PDF document text
    • http://denenofiv.johnsguitarrescueandrepair.com/uploads/1/3/2/6/132681351/0f95bfeab957.pdfIn 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/0049ca_65abb6c039944e21888356213e233b4c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b90ba1_17de1f31565e42e496f41c3fb93c2d2b.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ff2e72_ac8e3da1c86a481ebc56f891352c6d3d.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b7082a_48d962382afc418784f15df392cf22d0.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/bb05c1_1d04391ae7f8445fae21d800093e72df.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/83e584_070d7a2f7d1248b48d5ebd30870f7ea7.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2417/0664/files/7810275951.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9455/7347/files/sociology_book_for_gnm_1st_year.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5431/7214/files/inventory_stock_list_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9165/6864/files/41157479092.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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_off00005775.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5775 5328 bytes
SHA-256: e3db842fde9e89e31ffa381ba60124ba6b0227d0c9b9dfc788b8b1be89a1c985
font_01_sfnt_off00006979.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6979 10012 bytes
SHA-256: 2bd8e24d63d2edfe34b671b2b376cff877031f012fcd44e57ac7f732c2b39213
font_02_sfnt_off00008c0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C0C 16164 bytes
SHA-256: c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e

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