Malicious PDF — malware analysis report

Static analysis result for SHA-256 640ec58a01d6427a…

MALICIOUS

PDF

41.6 KB Created: 2020-08-03 08:48:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 90823edcce9f10ec9f6f8c815eeb5195 SHA-1: 58ad514885b75864044292e2e3057c4ca140f63f SHA-256: 640ec58a01d6427afde024fdba8a0d3bf27d8413b6df93a05041754d0bb4abde
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains a URL pointing to a redirector, suggesting an attempt to funnel users to malicious infrastructure. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm designed to obscure the ultimate destination and potentially distribute malware or conduct phishing.

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=honda+hornet+919 In PDF document text
    • http://files.centralcaldirtdogs04.com/uploads/1/3/1/4/131438427/tonebaxa-mojalujapako.pdfIn PDF document text
    • http://files.globaltransgroup.com/uploads/1/3/1/4/131438641/7fba4d9e.pdfIn PDF document text
    • http://files.poplarbluffdancestudio.com/uploads/1/3/2/6/132695472/5281392.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/1/0429/8860/1503/files/voxoxitozep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8890/3325/files/zinorumijopavagutunu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9812/0094/files/vakipekusig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1268/5977/files/38112589027.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4389/8022/files/hurley_dispatch_hotlist.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4275/0114/files/pepedikokukixiziputof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8330/0005/files/4025581907.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0228/8537/files/bejumeromijozinilenafares.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2758/6472/files/sesava.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2271/0941/files/99724532861.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9331/9079/files/vanubedebudozixofigogu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4035/9068/files/defarebitobidirevowatezu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8759/2608/files/fegaburikolexagawilugiza.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_off000062e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E0 4872 bytes
SHA-256: 15be2bc6b049712317be956be9e57c980054fd0526e8ab64510065ee74df41f7
font_01_sfnt_off0000736a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x736A 12028 bytes
SHA-256: 92c82f65496f52b57152134623096542ef769de4fe31281c2f2ce73c36ad1efa

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