Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fcd822af11767ff…

MALICIOUS

PDF

42.2 KB Created: 2020-08-10 06:39:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a7bd8207e4e9f2617993a8b4aee0d76a SHA-1: 58489c73edf5e1cea55954517e06df917cd7e3f9 SHA-256: 2fcd822af11767ff43d9755e87ce796f52ad6a0ea84279be534a82257d2af427
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. This suggests a link farm or SEO poisoning tactic to distribute malicious content. The ML classifier strongly supports the malicious verdict. No scripts were extracted, but the presence of the malicious redirector indicates the likely intent is to lead the user to a malicious site for further exploitation or phishing.

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=nitrogen+cycle+pdf In PDF document text
    • http://files.guardianwildlifeservices.com/uploads/1/3/1/4/131438137/22022fa4f0e09.pdfIn PDF document text
    • http://files.moregraceoutreach.com/uploads/1/3/1/6/131636654/nukinejifepoginik.pdfIn PDF document text
    • http://files.awwca.com/uploads/1/3/1/4/131453034/fobafawomujadezek.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/1/0427/9032/2335/files/41026845425.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4275/9071/files/tabadariraroxafegilo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0366/5822/files/wemope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7525/3910/files/compare_and_contrast_graphic_organizer_middle_school.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8627/4977/files/antonin_artaud_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2305/5523/files/cat_skins_for_minecraft_pe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1323/2024/files/sownik_angielski_chomikuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7661/6341/files/2929427900.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9691/5621/files/78656001735.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8570/1019/files/attestation_d_hebergement_visa_etudiant_france.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 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C58 4796 bytes
SHA-256: 853c1d14097c3c8da613dd51b50a757e9d69eae05a3f9208ce7b6c33feb98761
font_01_sfnt_off00006cc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC2 9732 bytes
SHA-256: 32c3f3d5b28e57174313c9ecc567a5873e742f4fc5cc4f8d8e9c0661b892ded8
font_02_sfnt_off00008e07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E07 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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