Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b619e1c56a3de95…

MALICIOUS

PDF

42.9 KB Created: 2020-07-29 16:43:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 30c78bc561fb7db98e9b3e4b69e77e63 SHA-1: 3f618ff9c717326c4d34060cb33345a6dae3af82 SHA-256: 8b619e1c56a3de955145a1cba8961a085b28de4db4be34aa940a726a8a993ee0
202 Risk Score

Malware Insights

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

The PDF file contains multiple external links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, suggests a lure related to a 'credit voucher format'. The presence of numerous links, including a link farm, indicates an attempt to drive traffic to malicious sites. The primary attack vector appears to be social engineering via a deceptive document.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=credit+voucher+format+pdf In PDF document text
    • http://files.simongibney.com/uploads/1/3/2/7/132741144/gidazexuzevolalixa.pdfIn PDF document text
    • http://files.azpattersonedu.com/uploads/1/3/2/7/132740814/fowidedizomevosar.pdfIn PDF document text
    • http://files.michaelbrownslawoffice.com/uploads/1/3/1/4/131406762/xajixolaxexojobegu.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/1/0432/4474/8950/files/pifujapuva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9544/0040/files/8470525256.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8669/1998/files/duvoduzedimadepeguvij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1024/4260/files/kikotagoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1155/4980/files/tezosijuxed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4783/0183/files/75709302305.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4638/7362/files/37450909632.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kubogofire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5664/4774/files/39468689894.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9392/3742/files/nuvamafukujinobujux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2208/1448/files/53471751012.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5680/6553/files/puvijijojul.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_off00006a13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A13 5044 bytes
SHA-256: 75d031f00dffb63b646bc15ff5ca3336e46ab833f61aa78980f6a64c0efdf279
font_01_sfnt_off00007b47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B47 10464 bytes
SHA-256: 90d087f8ea9872e70e47f13d6eb1d1d411f1315afe2497e7d2313c764d19f591

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