Malicious PDF — malware analysis report

Static analysis result for SHA-256 e579e670ed0016ec…

MALICIOUS

PDF

49.8 KB Created: 2020-08-11 15:40:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 363f77a99d2c97321d057a3128b223e0 SHA-1: 23a267768be7e4bbccb46c134d283775a1840659 SHA-256: e579e670ed0016ec1981128ceee6af096593c023946099b3e701940cd194fe3a
194 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains the malicious URL. The ML classifier strongly indicates maliciousness, and the PDF structure suggests a link farm designed to lure users 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=acetic+anhydride+production+process+pdf In PDF document text
    • http://files.visualsbyjacqui.com/uploads/1/3/2/8/132814791/3698344.pdfIn PDF document text
    • http://files.inadocument.com/uploads/1/3/1/4/131413718/lejinanerovip.pdfIn PDF document text
    • http://files.gypsygeorge.com/uploads/1/3/0/9/130969340/tawejakomigedapiziz.pdfIn PDF document text
    • http://files.barbarabairddesign.com/uploads/1/3/1/6/131606198/dcbc55ef09a8da7.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/1/0429/0058/6649/files/27128043135.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/59854739703.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7882/6661/files/lawepirudifubabezara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7731/2411/files/88081579012.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7923/6774/files/duzegababotabebuni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5009/8085/files/10072401681.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0689/2960/files/the_choice_for_love_barbara_de_angelis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5097/5910/files/16893230452.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3434/3574/files/28356550513.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3305/0779/files/tedobetiparelapiralov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/3936/9885/files/xumaxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3119/0952/files/discord_in_game_overlay.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_off00008705.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8705 5300 bytes
SHA-256: 0fb97d758d4536c398ae4c260a3a1d77b5f2baa24df7ecf6e768633b2fcdbc2f
font_01_sfnt_off00009900.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9900 9652 bytes
SHA-256: 434a9796731a6c84164484179a563db9d9fb7367db4c7520c8b597cb61efe678

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