Malicious PDF — malware analysis report

Static analysis result for SHA-256 84a70e8ad6711010…

MALICIOUS

PDF

42.6 KB Created: 2020-08-16 15:58:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cbcd71ca6aa642db20d1d8c4aab5dec0 SHA-1: 8bcf679a48095e0ae798c7b21e3c975e2fa47f6d SHA-256: 84a70e8ad6711010fe8e50c87cb604cda40726c70689239b8dea36a285306a75
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a link farm and redirects to a known malicious URL, suggesting a phishing or malware distribution attempt. The embedded content, though obfuscated, includes the malicious URL and numerous other links, likely intended to deceive the user into downloading a payload or visiting a malicious site. The ML classifier strongly indicated maliciousness.

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=bowers+and+wilkins+zeppelin+manual+espa%25C3%25B1ol In PDF document text
    • http://files.exploreyourjourney.com/uploads/1/3/2/7/132741225/zepigo-wejis-badatuxevewu-lonusame.pdfIn PDF document text
    • http://xabuvobi.clclockport.org/uploads/1/3/0/9/130969953/102586ff5415.pdfIn PDF document text
    • http://bujaxorov.mrexham.com/uploads/1/3/1/4/131405927/1720699.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/1/0431/6263/2360/files/52340598466.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6372/1637/files/retesakonevuteresawokaji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1085/0979/files/medicinal_plants_in_vietnam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8558/6841/files/28113509219.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7026/7300/files/23905614504.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1467/4841/files/latiwunojewiwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5358/8390/files/toworixogavo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8940/2779/files/ocp_group_annual_report_2018.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 4

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_off00006566.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6566 5572 bytes
SHA-256: edf49f012a2c79849f520f446fe290638f9bf7871eef02bb7bc51d74f03c86c5
font_01_sfnt_off0000781a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x781A 10212 bytes
SHA-256: 6606867008e1abef6b312dfd0e90c1c6e5428c5e79e155c9ef40642b6c3b0332

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