Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fbfb084a2f45c8f…

MALICIOUS

PDF

414.9 KB Created: 2020-08-01 15:19:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dec40e1c5d4cc06933ca15aba6e92d23 SHA-1: 857994480fd82668eb9784993494de29ff028eda SHA-256: 4fbfb084a2f45c8fe761e8c84777fc246564bc7c5a722d50dff36d30745a3a5a
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains heuristics indicating it is an advance-fee scam lure, specifically mentioning parcel delivery requirements. It also contains a critical heuristic firing for a malicious redirector link, which is the primary indicator of malicious intent. The document body, though heavily obfuscated, contains the malicious URL. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9875

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.
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=657+220-+1619 In PDF document text
    • http://files.nostalgeekretrogames.ca/uploads/1/3/1/6/131606965/1643758.pdfIn PDF document text
    • http://files.dyanetwork.org/uploads/1/3/1/3/131382274/73e61.pdfIn PDF document text
    • http://files.realmofricketts.com/uploads/1/3/1/4/131437241/vojotoreruje.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/1/0428/0975/3767/files/riduxugisovukinazuzim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/zonuvonabewed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0392/5912/files/jabaleledipapoleden.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6826/8456/files/61786037147.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8715/0752/files/busawavaxoririgubon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8065/5775/files/15325045441.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/55320607517.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5397/2633/files/68916827732.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4909/0200/files/space_engineer_servers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7596/0985/files/guzogixopuzaromolew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3353/4357/files/51283924443.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5458/0391/files/ginokupowaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0142/9662/files/284940265.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 8

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_off00063225.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63225 4940 bytes
SHA-256: a5b9881e62692b74fa657ab61644d229627b2f154509dd42d58126660c7c2329
font_01_sfnt_off00064327.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64327 12764 bytes
SHA-256: 2f3d2e72e6b19d137a052c4b1a6626cbbfd7403a3576769922c03b1c21e0cb89

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