Malicious PDF — malware analysis report

Static analysis result for SHA-256 84378911a1017e26…

MALICIOUS

PDF

45.5 KB Created: 2020-08-13 19:21:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2532a7c708839662dcdcd36950e3f02d SHA-1: 5086c05aa88fb0973f9254e1394f431c5e47485b SHA-256: 84378911a1017e26ef835adcf43cbdae85c04c483616bcffbd7beb9494da9246
194 Risk Score

Malware Insights

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

This PDF document contains numerous links, many of which point to a redirector infrastructure known for hosting malicious content. The document body and embedded links suggest a lure to download files, potentially leading to further compromise. The ML classifier strongly indicated maliciousness, and the presence of redirector links confirms a malicious intent to direct users to harmful sites.

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/wb?keyword=anker%20charger%20user%20manual In PDF document text
    • http://tekena.historywithmrsb.com/uploads/1/3/1/4/131453574/8096280.pdfIn PDF document text
    • http://lanewupe.lashupbrowdown.com/uploads/1/3/1/3/131398097/kuzezoguxevuxuzika.pdfIn PDF document text
    • http://files.sapnodesignstudio.com/uploads/1/3/2/6/132695203/259347cef4beb.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/1/0431/3343/6055/files/fundamentals_of_engineering_drawing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1869/8400/files/alphabet_with_pictures_printable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5090/7286/files/nubafowibofejawanekivig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dutevitijenunolekegek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3293/6605/files/93350904883.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8421/0583/files/89866996993.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2629/2629/files/mojifa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8086/8255/files/pagiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0663/7726/files/83266688942.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1214/5830/files/pitabalaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2186/8960/files/42464840289.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006920.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6920 5264 bytes
SHA-256: 5fef3c2a142e26c301e50677cfbe3f9be6d4d95a456cd3980653ce6c2d7a006b
font_01_sfnt_off00007ace.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ACE 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off0000835b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x835B 11028 bytes
SHA-256: 53ccc97cb87042b8809986b0d496819b59534296e3f829df6651fa723919127e

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