Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7304f4ccc179002…

MALICIOUS

PDF

45.0 KB Created: 2020-08-28 11:00:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c39f163c8cf2a87e8e814ce14825b9d3 SHA-1: b4e6fb61c0accb47af63b497376e04dc61b2742c SHA-256: a7304f4ccc1790024aa41faba41f3334943fc447269dbb114461efc70b051e1b
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as content related to Java programming. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that the embedded URL leads to known malicious infrastructure. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, contains the same lure text and URLs.

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=java+how+to+program%252C+early+objects In PDF document text
    • http://files.excelpodiatryclinic.com/uploads/1/3/1/4/131455398/tixizasipilonefivom.pdfIn PDF document text
    • http://wesomujub.davisionentertainment.com/uploads/1/3/2/8/132814930/viwepi.pdfIn PDF document text
    • http://files.supercoolyconcepts.com/uploads/1/3/1/0/131070327/ab9bea2d37.pdfIn PDF document text
    • http://murira.tom-lane.com/uploads/1/3/0/7/130776485/nubiwaruwagupolidiz.pdfIn PDF document text
    • http://files.livingwellandsimply.com/uploads/1/3/1/3/131379832/a885aa504e7d0d.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/1/0451/2183/1065/files/45454334035.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9717/0847/files/57174118700.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6150/0309/files/business_english_for_beginners_a2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5876/4696/files/aicpa_ethics_exam_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/2403/1384/files/76106162329.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9139/2664/files/adobe_full_version_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5606/1850/files/87936917590.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3434/3574/files/58803154521.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0146/2436/files/wavevezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1806/7876/files/144242199.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5036/0232/files/maytag_front_load_washer_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8701/8649/files/38027205697.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4301/2256/files/agile_methodology.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_off0000647b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x647B 5860 bytes
SHA-256: 8979b413ff4d372e9f0121867cec633e8ad9eccb13e878d9b18bbb48356f84af
font_01_sfnt_off00007876.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7876 15048 bytes
SHA-256: 2f1834f39323b46e6acdd42ba14f4952d4da8e16257373da2647d6e0e7374535

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