Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2273801dd13eda3…

MALICIOUS

PDF

37.5 KB Created: 2020-08-24 12:49:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 47c9b71075c1b31c82a67855af8833bc SHA-1: badcb24cd3eebfac880ed8b8e35afd359d120590 SHA-256: a2273801dd13eda33034374582650f825fe0943974586267e14263e52d15e5a4
194 Risk Score

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=boiler+water+treatment+handbook+pdf+free In PDF document text
    • http://files.michaelroldham.com/uploads/1/3/1/1/131164117/pazegenupiw.pdfIn PDF document text
    • http://files.sodiscgolf.com/uploads/1/3/1/4/131409794/87f25641f.pdfIn PDF document text
    • http://files.theperfectshipping.com/uploads/1/3/1/0/131070560/0e0fc.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/1/0430/8572/5857/files/boragudoxodel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/5721/2568/files/capitalization_rules_16-_20_worksheet_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5634/0890/files/68514870012.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0332/2261/files/99171936688.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0233/9232/files/mafalemigifariji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5794/6519/files/system_updater_app.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2634/1278/files/40751772221.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8937/1029/files/80218503262.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0770/3201/files/ansi_c_balaguruswamy_free_download_6th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/59854739703.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4757/4949/files/polymer_clay_collar_necklace_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1162/1543/files/lovageme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6802/3194/files/baniputirunofujid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1961/5904/files/watch_suicide_squad_online_free_vodlocker.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000047ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47CE 5236 bytes
SHA-256: 7869a4ff1f0e408f7b86f6f413e672db6f9da9de40e98621234712b2ba565f5b
font_01_sfnt_off00005969.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5969 9684 bytes
SHA-256: 878200d529edfc2444535dfd624ecfb9420b2f4d32a717c070cbfe4c13b938a4
font_02_sfnt_off00007a86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A86 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

Open this report in the interactive analyzer, or submit your own file for analysis.