Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d3620a77e6752bf…

MALICIOUS

PDF

35.8 KB Created: 2020-08-11 15:25:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 465b47ce8e28b4646cc610157afc4045 SHA-1: e2c32a4f72bc566c9e86af4cf8c067834ede3212 SHA-256: 7d3620a77e6752bf27ced2dc190a3565063cd20c6e37ae8535377cdfbe56bd39
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text suggesting a 'worksheet' lure, and the primary URL leads to a redirector that is part of a link farm. This indicates an attempt to drive traffic to malicious infrastructure, likely for phishing or malware delivery.

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=adjective+noun+worksheet+pdf In PDF document text
    • http://files.rollatropicalsno.com/uploads/1/3/0/8/130874451/tadem.pdfIn PDF document text
    • http://files.alphaconllc.com/uploads/1/3/1/4/131453024/fomagukinote.pdfIn PDF document text
    • http://files.whiteandkennedyancestry.com/uploads/1/3/1/8/131856392/d81b431.pdfIn PDF document text
    • http://files.tasteofmissouristroll.com/uploads/1/3/1/4/131438776/5110d60.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/1/0430/9601/5002/files/49528945435.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5489/1161/files/how_to_boot_from_usb_windows_7.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3593/5398/files/98337662677.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0715/5110/files/data_engineer_interview_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41078692832.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1928/0288/files/wuresifivuselobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/soxebudajemu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4637/7374/files/18347154025.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/8104/2839/files/dubai_travel_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5689/7947/files/77109629848.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7016/8992/files/45528996117.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ridojunewosinojep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3228/9178/files/spanish_to_english_dictionary_free_download.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004dac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DAC 5280 bytes
SHA-256: 97e2319574a218808ff2a35cc0fedc21fd01a2a6f0d6511c9ee033ba2935124d
font_01_sfnt_off00005fba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FBA 10164 bytes
SHA-256: 86ff68c4634c6ff20400c69547306d12a3125278c6c60a1cb73dadeae78dee6f

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