Malicious PDF — malware analysis report

Static analysis result for SHA-256 0836c157de434147…

MALICIOUS

PDF

32.7 KB Created: 2020-08-24 23:17:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f91a1c902309f86726c0b95832a5ee54 SHA-1: d1bb121e5edd41b80343678021318d78b7432da6 SHA-256: 0836c157de43414729fecc5af156f82476132f7005dbab956ea4f976dc30820a
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a malicious domain, identified by heuristics as a redirector and SEO link farm. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. This suggests the document is designed to trick users into visiting a malicious website, likely for phishing or malware distribution.

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=casadio+dieci+a3+manual In PDF document text
    • http://gaguxamep.fleurspressed.com/uploads/1/3/2/6/132696067/4703236.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/1/0434/8398/8125/files/convert_set_to_list_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3152/6557/files/60637468839.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5823/3493/files/wazepisavobesiludubinode.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8190/7870/files/79572213869.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8704/4510/files/pabawarizatudaxakiwanasu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9766/9278/files/vuvububa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7921/2959/files/sosesuwipurafazame.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5045/1623/files/corazon_de_nio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/6854/3396/files/printable_alphabet_worksheets_for_kindergarten.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6994/7555/files/moteraxopedovobunapidera.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_off0000424a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x424A 5060 bytes
SHA-256: 452e9fddec4414f05a5a2b3e199c96b2c2d166e1c3199270af601ac82c88d529
font_01_sfnt_off00005360.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5360 10236 bytes
SHA-256: 007559b69be0b1ab083d0b0741a25a8f61b4a0a91573d98b6834c58f75666fa2

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