Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b799bc15919385…

MALICIOUS

PDF

45.4 KB Created: 2020-10-04 19:05:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-28
MD5: ea6271677bedc21dcc494944950b748c SHA-1: a448db982726d1c4732f68231883e5d520aaf21d SHA-256: 72b799bc15919385ad52da29868f152ef8ef12f2317dac1fb11ccaf8ab5cc673
202 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://ggtraff.ru/strik?keyword=bhopal+gas+tragedy+pdf+free+download In PDF document text
    • https://site-1036946.mozfiles.com/files/1036946/favotasipelowoza.pdfIn PDF document text
    • https://site-1036832.mozfiles.com/files/1036832/96913298661.pdfIn PDF document text
    • https://site-1039180.mozfiles.com/files/1039180/lowukij.pdfIn PDF document text
    • https://site-1036629.mozfiles.com/files/1036629/kosotopirepumavosik.pdfIn PDF document text
    • https://site-1038924.mozfiles.com/files/1038924/gebosidadewesilat.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/1/0427/7056/3239/files/zinukatumowofenavogosoxab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/2177/5260/files/logezidazoda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21b9215c-c33a-4dfa-b9b5-d569b502de37/4681586541.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48f2d358-0b21-458e-b2aa-cac70b745b03/16129391448.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b15bc466-d765-49b3-9d5a-9aad6abf012d/lezukodolinenel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92ce50c0-2618-4ca5-86e8-7b7b96241484/tusafalodefafuguxupababev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f944136-01f5-483e-8e73-7f2071b8051b/16226045653.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/534fcdf2-ef41-48dc-97ab-8b96b4f596b6/xotefajirerukopuje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b74302f6-e3fd-4c34-9dee-a61c98b58297/7315622737.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1dc7dd5e-7c85-4dd9-8313-bc332d02ea34/52178380624.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/feca197b-7dc2-4832-86da-bc9917cf8981/65576967999.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_off0000640a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x640A 5288 bytes
SHA-256: 5fbe76bf5f4b88d3981d36c2063d00b37749283194734346bf8ac7d2fb454dfb
font_01_sfnt_off0000760f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x760F 10524 bytes
SHA-256: 1251f616704c36ae905cc0e249cb60c815a0dda0835a22c5edca82ae9132c6af
font_02_sfnt_off00009a25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A25 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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