Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f1b8101707576c3…

MALICIOUS

PDF

44.2 KB Created: 2020-08-07 01:06:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 08c7e6b0105a8cd10ab594ebd821a68b SHA-1: 7f799c2e994f1c7c4bbf29b1e64337e5918a02c0 SHA-256: 0f1b8101707576c34b4414ab27b4f4ca40c19b0444b95707f0232e9b4f52dfd7
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically a URL designed for SEO spam and phishing. The document body, though heavily obfuscated, contains references to the malicious URL and other benign-looking URLs, suggesting a social engineering attempt to trick users into downloading further malicious content. The ML classifier strongly flagged this PDF as malicious.

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=chemistry+text+book+class+11+pdf In PDF document text
    • http://zobotibax.dumassevents.com/uploads/1/3/1/4/131437363/xumitifibesumir-xixojo-kibupufa.pdfIn PDF document text
    • http://puxapo.heavenlytouched.co/uploads/1/3/0/7/130775735/6b58717d.pdfIn PDF document text
    • http://files.garealpropertylaw.com/uploads/1/3/0/9/130969742/nesefomamalemesamubi.pdfIn PDF document text
    • http://files.powerofplaywilmington.com/uploads/1/3/1/3/131398334/gomotefadusiji.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6869/4432/files/18404027061.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3318/2886/files/mind_body_therapy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9529/4105/files/importance_of_communication_ethics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5808/6559/files/wigawarirosuramojabiwenux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5710/9402/files/paleo_diet_food_list_in_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4907/4336/files/85820232791.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8209/4494/files/42032125361.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0006/9285/files/football_world_cup_2020_fixtures_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1729/8329/files/vafakojazedomapodasupal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6021/4425/files/veguvoturabafolonove.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1679/8883/files/20305300647.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 7

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_off00005f64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F64 5728 bytes
SHA-256: de69ca30de39a1ef7518ab47e79a368f5db2dea9175d0e2e07d18d867fafbbaa
font_01_sfnt_off000072bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72BC 10464 bytes
SHA-256: 68fa358dc821cd0acd7a6f7b947d2690f8ba1dcaadd9d4bfad38965fe814b8eb
font_02_sfnt_off000096c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96C6 3260 bytes
SHA-256: 8caf45783560910e2ac530005a2528f93f2c4e62936b4d787b7c222dd2e7ae21

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