Malicious PDF — malware analysis report

Static analysis result for SHA-256 5afbe71f44a9b76c…

MALICIOUS

PDF

44.6 KB Created: 2020-08-16 22:25:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a1a70cc5ec415747536a7b7d720bb33a SHA-1: 0d073f518bae6aa300e99ffd6f1113f87258a443 SHA-256: 5afbe71f44a9b76c026a7f360896dbd00b522902a079ffbe266fa38431cef269
202 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious infrastructure, identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body, though heavily obfuscated, contains references to the URL and other PDF files hosted on Shopify, suggesting a link farm or redirection scheme. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to lead users to harmful content.

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://ttraff.ru/pify?keyword=brooklyn+99+6+temporada++mp4 In PDF document text
    • http://files.goodtimesgv.com/uploads/1/3/0/7/130775191/3bcb9.pdfIn PDF document text
    • http://files.luciearcher.com/uploads/1/3/0/7/130775328/4ee2aa75470.pdfIn PDF document text
    • http://files.charmedbordercollies.com/uploads/1/3/1/4/131453355/jidetutopu-pogujem-vawizusomir.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/1/0432/8344/7968/files/87607688876.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5156/4707/files/tuxizikezuxulutuvike.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3598/1974/files/dunegiravuzuva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8991/2218/files/gituv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6162/2437/files/kuwuzalokimeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2149/2643/files/taxation_and_land_reform_in_the_philippines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6230/5702/files/rewimolatelivosobiku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0453/9233/0920/files/kashmir_banega_pakistan_logo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4555/1271/files/sustainable_construction_green_building_design_and_delivery_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7605/0330/files/fuzavajajugopun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2222/9397/files/kavovivevunizosamizamasem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7804/1244/files/fotewu.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_off0000638b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x638B 5280 bytes
SHA-256: 594d238e161942559d44098730c5825df4e0622f99735853baaad409f6578c06
font_01_sfnt_off00007570.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7570 9992 bytes
SHA-256: 185c55831da34854e9e9bcd8267bad41de17311ed7d09ed7ae91482ecbdee0c7
font_02_sfnt_off000097a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97A0 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361