Malicious PDF — malware analysis report

Static analysis result for SHA-256 509a302795093a2c…

MALICIOUS

PDF

47.4 KB Created: 2020-08-09 13:41:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3374622cfdadb54fb02f02e01af4e3b3 SHA-1: eea35241c2ac9b2db88add12e5154b618e01a287 SHA-256: 509a302795093a2c3efcb5c46f1f87776998ef3cddacc1b6e2cf4993bb7bb2b4
194 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many of which point to external resources, indicating a link farm or redirection strategy. One critical heuristic identified a link to known malicious redirector infrastructure, specifically `https://ttraff.cc/pify?keyword=buku+akuntansi+perusahaan+dagang+pdf`. This suggests the document's primary purpose is to trick users into visiting this malicious URL, likely for further exploitation or malware delivery.

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=buku+akuntansi+perusahaan+dagang+pdf In PDF document text
    • http://files.henkpeetersarchive.info/uploads/1/3/1/4/131452988/c0c57cc.pdfIn PDF document text
    • http://sidokajar.doodahsoul.com/uploads/1/3/1/4/131437886/1346612.pdfIn PDF document text
    • http://files.prettylittlepotions.com/uploads/1/3/0/7/130738704/mugavaferepezexeduzu.pdfIn PDF document text
    • http://files.mydoggo.uk/uploads/1/3/1/4/131407737/jobesusa.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/1/0434/4122/5880/files/70962940242.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0453/4692/files/amoebiasis_adalah.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6083/6005/files/42472890520.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3057/6285/files/52611925333.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6259/9584/files/63068442690.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4837/8280/files/83669426084.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2484/8795/files/pdf_accessibility_checker_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2992/0930/files/baixar_setup_para_pc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5462/7993/files/libros_de_instrumentacion_quirurgica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1931/3053/files/99774756356.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_off00007920.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7920 5384 bytes
SHA-256: 9bca441e15017bc466346a8d98316cd402f99ce9093799f19d91017fd3ec8465
font_01_sfnt_off00008b78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B78 11348 bytes
SHA-256: 2109b8da29e2704bf31c936402f3ebadac06761c0c3f859533c366e3d881e643

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