Malicious PDF — malware analysis report

Static analysis result for SHA-256 df4f7f8bd4e6eec5…

MALICIOUS

PDF

46.9 KB Created: 2020-07-30 11:08:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 12b4f7a24a775ae9d14a83fd1ea667e4 SHA-1: 10cd64916dce309b6f5326d1e09ebf5a441e3130 SHA-256: df4f7f8bd4e6eec5b0d63910821cfcfdd48184b7774d43b43826dd206a908df1
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector. The document body is heavily obfuscated, but the presence of a malicious redirector URL and a large number of external PDF links strongly suggests a phishing or malware delivery attempt. The ML classifier also flagged this PDF with high confidence.

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=samba+canasta+regeln+pdf In PDF document text
    • http://files.iancarlsen.com/uploads/1/3/0/7/130775221/780859.pdfIn PDF document text
    • http://files.luckytransformationcenter.com/uploads/1/3/1/1/131164100/8120481.pdfIn PDF document text
    • http://files.andrewmichaelart.com/uploads/1/3/1/4/131408529/59fa416c9cccb3.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/1/0433/5638/9528/files/poberajedivanepojirebulal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4838/7239/files/26338635015.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6550/6966/files/27100154715.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3134/7868/files/tinegonamimunuzi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7735/4143/files/zujiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5032/7451/files/6459478214.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5811/0363/files/wuvudanolilokoguxofegok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/rerez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4989/1493/files/pidovot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2214/0063/files/14904681816.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9764/4449/files/34301050454.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sibubemazalomasedexikeme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8852/7013/files/wenaxikawedetug.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_off000079cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79CC 5348 bytes
SHA-256: b4497e63c8706d5e23fed311434b8aa4b2a4267f078261f7bf86f573550fe8e8
font_01_sfnt_off00008bd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BD5 10144 bytes
SHA-256: 253fe64e7dc9bde1a1f81814c8c157ca6f4d36713fe09d075f2684ef9b1f5853

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