Malicious PDF — malware analysis report

Static analysis result for SHA-256 b94f255306715205…

MALICIOUS

PDF

43.7 KB Created: 2020-08-03 07:53:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 98d7ac88af97420fc4b50a162882b592 SHA-1: f55962d2975d3814ea4eebcbb2f0534f7b8e98f2 SHA-256: b94f255306715205e3510a41ed03869641c88026705cb9a63dcfb0db8b7b7e84
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external PDF links, suggesting an SEO manipulation or link farm tactic. One of the primary links, https://ttraff.cc/wb?keyword=estudio%20anual%20de%20redes%20sociales%202018%20pdf, is identified as a known malicious redirector. The document body contains garbled text but includes the same URL and other PDF links, reinforcing the malicious intent.

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.cc/wb?keyword=estudio%20anual%20de%20redes%20sociales%202018%20pdf In PDF document text
    • http://files.allenlightshow.com/uploads/1/3/2/6/132682745/7d61264286bde.pdfIn PDF document text
    • http://files.matthewhavertz.com/uploads/1/3/1/0/131070849/dikobovot-jisuxipen-zusaku.pdfIn PDF document text
    • http://files.jbhealth.co.uk/uploads/1/3/0/7/130739183/4307364.pdfIn PDF document text
    • http://files.salentoby5.com/uploads/1/3/2/6/132681352/bivonumajorikug_kejimetazoligis.pdfIn PDF document text
    • http://files.mrwhitcher.com/uploads/1/3/1/3/131380889/nulivulamibixi.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/1/0432/0041/3856/files/82968762531.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9258/8184/files/zokuronuporepirarab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7737/8972/files/39271284435.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8176/8864/files/dawofaradirodojeviw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5312/9640/files/jimerimifavekemi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6649/1031/files/why_did_notsobot_get_banned.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4457/7178/files/xikog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8153/9483/files/12910608928.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6299/2795/files/tasejikadoxav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2585/6669/files/gabula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/93616534700.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8297/3346/files/31165412164.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_off000067ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67CE 5628 bytes
SHA-256: 802e93e649f5390c6a7fbe5256e8a5e95ed00d827185ade4cfa6d7ac5c65bb03
font_01_sfnt_off00007b0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B0E 11396 bytes
SHA-256: b1712a37c14cb59e90ead16680e7e4bb669765b4ab25476881bcc80b85c3ea6e

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