Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ad186a6e2792d0e…

MALICIOUS

PDF

40.8 KB Created: 2020-08-10 08:30:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 53cf555776522dde5c9e07de23dfc78a SHA-1: 2b199f63eaae9f3aece07511be9dfdfa8ce46776 SHA-256: 5ad186a6e2792d0ed4fc6abdf623ef4470213414f0069b34d0c9806c9540bd36
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a known malicious redirector. The document body, though heavily obfuscated, contains URLs that appear to be part of an SEO link farm designed to lure users into downloading potentially malicious files. The ML classifier strongly indicates 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.ru/pify?keyword=calidad+de+vida+en+el+trabajo+juana+patlan+pdf In PDF document text
    • http://files.apologiesfrommen.com/uploads/1/3/1/3/131380316/2806235.pdfIn PDF document text
    • http://weguta.empressboatclub.org/uploads/1/3/1/4/131483281/7355611.pdfIn PDF document text
    • http://files.reliabletrust-translations.com/uploads/1/3/2/6/132683484/bobinusepixubag.pdfIn PDF document text
    • http://files.maxiesknitwear.com/uploads/1/3/1/6/131637635/renefusi.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/1/0434/3064/1826/files/length_unit_conversion_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6769/4490/files/mawasemawigilux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3874/2430/files/77266595016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/3042/6278/files/panasonic_aw_ue150.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6129/6790/files/cloak_of_the_bat_5e.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/nuwajosowaleku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5287/4390/files/12494747168.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54101174921.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8073/5138/files/manual_caldera_baxi_mainfour.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2724/2906/files/heil_heat_pump.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0267/4845/files/vemuzuzozuzulorutofinuke.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 8

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_off00005d17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D17 5040 bytes
SHA-256: 0a93eaf429b59b2422386e3a06f082620d466e02b6de0dc1da7c700662255748
font_01_sfnt_off00006e4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E4F 11744 bytes
SHA-256: 11bf674d225aeaa80d98ef0f10b3bd82079cdb7ef04aeff25a790d715bedcc6e

Open this report in the interactive analyzer, or submit your own file for analysis.