Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae04d68c56bc6122…

MALICIOUS

PDF

47.2 KB Created: 2020-08-12 17:08:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 05b3b0cbf8e610c7d2c9a764cd5bff28 SHA-1: 4bfe61b78e75ece4f4aee3cd3c26ae26d762e35a SHA-256: ae04d68c56bc6122b3a3f9e027cc96de2ba76724da506b329bfcb326f102db7f
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text and URLs related to converting base64 encoded PDFs to images, suggesting a social engineering lure. The ML classifier strongly indicates maliciousness. The primary IOC is the redirector URL, which is likely used to funnel victims to a malicious site.

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=convert+base64+pdf+to+base64+image+javascript In PDF document text
    • http://files.colettebeardall.com/uploads/1/3/1/4/131454012/vepaxofimowe_wodenepuba_wobikeguka.pdfIn PDF document text
    • http://files.enrichmentcoop.com/uploads/1/3/1/3/131380177/podakikil-romatazunuk-bilijaji.pdfIn PDF document text
    • http://files.northeastgafoodallergy.org/uploads/1/3/1/0/131070476/keluzujorojezan.pdfIn PDF document text
    • http://files.doubledatepacking.com/uploads/1/3/1/6/131637606/fifanefuwojob.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/1/0440/2960/8101/files/328810165.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9186/1412/files/reviter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2218/8701/files/82064002444.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3414/0056/files/fevexupemi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5616/8093/files/79247098234.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4713/2063/files/affirmative_action_in_education.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0403/5221/files/36779663790.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/savobavawulituxixiwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6173/1743/files/paracord_bullwhip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5452/8677/files/tamil_news_paper_download_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9426/8320/files/72510221975.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5820/7651/files/critical_analysis_of_ulysses.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_off00006e65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E65 5864 bytes
SHA-256: 941d20e585f23e8bb1a0ca1861e18c60726127d3c1ce6731a42b807df13f869c
font_01_sfnt_off00008259.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8259 14256 bytes
SHA-256: d7d5429801b35efc32b1a071292fe940cfb5e59c3c668024f430ec49a1ff043d

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