Malicious PDF — malware analysis report

Static analysis result for SHA-256 afa5926e3b3a0628…

MALICIOUS

PDF

45.0 KB Created: 2020-08-07 12:50:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d7580246fcde5af8c9b2474c70f4b3e3 SHA-1: e858d0f75250ad1da232ac96466964cc90c58489 SHA-256: afa5926e3b3a0628c08d1232dc8b232e15b697731bddd479d4a327ddbcf5eec3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, but one critical link directs to a known malicious redirector. The document body, though partially corrupted, contains the URL that triggers the malicious redirector. This suggests the PDF is part of a link farm or SEO poisoning campaign designed to drive traffic to malicious infrastructure.

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.ru/pify?keyword=lista+de+adjetivos+em+ingles+com+tradu%25C3%25A7%25C3%25A3o+pdf In PDF document text
    • http://files.theclaytonconnection.com/uploads/1/3/1/3/131382595/pilumorolexojoteme.pdfIn PDF document text
    • http://files.glowwellnesscollective.org/uploads/1/3/1/8/131857112/eeb9520f6b1.pdfIn PDF document text
    • http://files.lindyjames-christenson.com/uploads/1/3/1/3/131379612/3953267.pdfIn PDF document text
    • http://files.simixagriculture.com/uploads/1/3/1/4/131437670/f964cc984de.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/1/0431/4388/9052/files/leburib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3545/0774/files/58156753334.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0422/1849/files/uniden_scanner_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0595/0626/files/rifoxasopire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4021/1105/files/bokibuzamavikafenofadib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2236/9446/files/ziwejurifewodewomite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0304/4263/files/sotimis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9911/9013/files/assam_tet_guide_book_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0982/5176/files/64165616576.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9413/8268/files/xolonibujupotuxanefazos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9377/8837/files/4062232218.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_off00006185.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6185 6052 bytes
SHA-256: 38d3fab1fa06504aaaa62a4c8343edc7dd4e75d6a8fe39b9e4761093a884c2d3
font_01_sfnt_off0000753f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x753F 16660 bytes
SHA-256: 39fa317a90f8052803a540863d939a7459787c8be5c5262b3b33824cbc22665e

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