Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ffecd65d83907b5…

MALICIOUS

PDF

50.9 KB Created: 2020-07-28 04:39:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2324ee4ce824c63512d3646a52db046b SHA-1: a2d08d9254524a7ad8c9c4669db18d97c9c21b18 SHA-256: 1ffecd65d83907b5ff4c3a2624b698b39e1d888329f0c89b13e74ebb79aeb109
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, with a critical heuristic firing for a malicious redirector. The primary URL points to a redirector service, and a secondary URL is part of a large link farm hosted on Shopify. The ML classifier also strongly indicated maliciousness. The document body is heavily obfuscated and appears to contain metadata rather than user-facing content.

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.com/pify?keyword=bhojpuri+dj+song++mr+jatt In PDF document text
    • http://files.blueviewgsmd.com/uploads/1/3/1/3/131381900/3183956.pdfIn PDF document text
    • http://files.howlinwolfhounds.com/uploads/1/3/1/4/131437210/8891353.pdfIn PDF document text
    • http://files.cchsmarchingtigerband.com/uploads/1/3/2/3/132302993/aab5f0.pdfIn PDF document text
    • http://files.snowypeaksoap.com/uploads/1/3/2/3/132302973/a7512c13cdce8e.pdfIn PDF document text
    • http://files.professionalcapitalpartners.com/uploads/1/3/1/4/131438766/4121815.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/1/0429/1880/5657/files/toronira.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9033/7174/files/jitunubidet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46676539889.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9785/8972/files/fenozasevovewep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9431/7981/files/76948019775.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1306/9210/files/74224606557.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6808/7701/files/fekefurutemuni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3681/0152/files/31475259874.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1615/9385/files/4200953274.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1669/1612/files/54308243535.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_off0000898d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x898D 5228 bytes
SHA-256: 31b4409665c73f764f6eb19f0c4b565c0e690145297f2eaf55e49ab34fc6214a
font_01_sfnt_off00009b22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B22 10268 bytes
SHA-256: fa1ee41018744ab783955782eafa244e22e30ba90e81bdf7edcdd9a09ccddce8

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