Malicious PDF — malware analysis report

Static analysis result for SHA-256 572aed3b0a21d45c…

MALICIOUS

PDF

50.9 KB Created: 2020-08-08 12:57:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b15f34927b0f55d2fc9b5385c50e7762 SHA-1: 78b7d6a8a8fac6fe2c5520fe9db17820fe43385e SHA-256: 572aed3b0a21d45c74a6689151c8c61379a5166170d459be921854cbf3783034
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the same URL. The PDF_SEO_LINK_FARM heuristic indicates the PDF is part of a larger link farm, suggesting a broad phishing or malware distribution campaign. No scripts were extracted, but the primary attack vector is the malicious redirector link.

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=solving+quadratic+equations+graphically+worksheet+pdf In PDF document text
    • http://files.marvlindbergmysteries.com/uploads/1/3/1/3/131379312/tudap.pdfIn PDF document text
    • http://mijabupip.loudmouthofsl.com/uploads/1/3/1/4/131406390/zodibezojadu.pdfIn PDF document text
    • http://files.storywings.net/uploads/1/3/0/7/130775403/xumoboxof-jasasavowogarag-lamizexo-wuwaxoromit.pdfIn PDF document text
    • http://files.yogatuned.nl/uploads/1/3/1/4/131483266/5248142.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/1/0428/9835/8432/files/5561128363.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9311/2472/files/viedo_to_mp3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0939/1261/files/gotasorel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8956/6623/files/rubamajorapurununusi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5961/5646/files/91336198034.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3355/8182/files/31294091436.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4603/4843/files/89334476142.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9755/4084/files/luwafekujage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9902/9655/files/78446185507.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5302/1334/files/calligraphy_fonts_a_to_z.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1668/2663/files/xololedibigewuwa.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 7

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_off00007eca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ECA 5964 bytes
SHA-256: 8a95fd69b9074328532c015d6b0072aa6fb4cec2cb61a1450cf6b8c688c3abbe
font_01_sfnt_off0000932a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x932A 13652 bytes
SHA-256: a5148039cdfbf9a950fb7da46329d340b5b956ac60f6975f9fe348c2b8632cf8

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