Malicious PDF — malware analysis report

Static analysis result for SHA-256 9825d55ff7a76c6f…

MALICIOUS

PDF

42.0 KB Created: 2020-08-11 07:32:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 85296e95d089e2fb2eda0707a1387649 SHA-1: 2401b9778507c0baba7ac4ae15fdfc8a4dc0bdaa SHA-256: 9825d55ff7a76c6f37779e08aeb44f7fbcadcf691bd208523e49d4b5f9a697e5
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary URL pointing to a known malicious redirector. The document body text is obfuscated but contains the same lure as the redirector URL, suggesting an attempt to trick users into downloading malicious content. No scripts were extracted from this sample.

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=uses+of+computer+in+different+fields+pdf+download In PDF document text
    • http://files.alphagolfopen.org/uploads/1/3/1/1/131163960/ed3bef772221.pdfIn PDF document text
    • http://files.michelleblanchette.org/uploads/1/3/1/6/131637841/pusapafinoto.pdfIn PDF document text
    • http://mirewafof.mindbloggings.com/uploads/1/3/1/4/131483254/ba3657f608b2cf.pdfIn PDF document text
    • http://files.corelliwinecompany.com/uploads/1/3/0/9/130969225/61a0b.pdfIn PDF document text
    • http://files.mariapramaggiore.com/uploads/1/3/2/6/132682124/zezaxumuwab.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/1/0432/6191/9390/files/55399300689.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7564/1247/files/vmware_workstation_15_license_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1740/3549/files/wulimig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0699/9203/files/java_8_lambdas_o_reilly.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9480/1568/files/sekikaxalanabivos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2588/2518/files/lacuna_coil_comalies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7870/3511/files/sobatumewurelis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9200/9379/files/fajufigimarilakemukogobub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/5667/2418/files/quantum_chemistry_mcquarrie_2nd_edition_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3078/8758/files/today_english_news_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5936/3478/files/daxolupafiwar.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 6

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_off00006742.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6742 5384 bytes
SHA-256: 95a09a3eebe404c08fa48b4f70443c6af0999d5d37edce8161de5f9e70f0d53e
font_01_sfnt_off0000798a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x798A 9748 bytes
SHA-256: 620c9d1e1c50a053d4c8665c9de0bed953e421f5667898e744c318fcb87c6f07

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