Malicious PDF — malware analysis report

Static analysis result for SHA-256 6feba25b090fc844…

MALICIOUS

PDF

35.2 KB Created: 2020-08-20 05:05:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2fc2d4488292330e65b95d1596df3c57 SHA-1: cc512c8e0c7ffc57093eac89f3991be5f2b54f92 SHA-256: 6feba25b090fc844299f5e49790569b5829422f4fd0e2cc412fc2d9681952421
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a redirector to a malicious URL, suggesting a phishing or scam attempt. The embedded content, though obfuscated, includes the malicious URL and links to numerous other PDFs, likely for SEO manipulation to improve search engine ranking for malicious content. 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=elasticated+tubular+bandage+size+guide In PDF document text
    • http://files.justacatlover.com/uploads/1/3/0/9/130969428/purelarega.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/1/0433/4541/2261/files/95139718882.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2953/4632/files/8269227967.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6764/5852/files/amelie_poulain_valse_piano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9553/9368/files/difference_between_nsdl_and_cdsl.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2689/8344/files/28380351908.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7799/9519/files/porizigafopos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2274/3712/files/android_accelerometer_sensor_permission.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6361/4369/files/lemukidulibivojasawawew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6245/1611/files/wesepikezetuwubupawexa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6604/8164/files/modern_cv_template_word_free_._docx.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7790/3263/files/mmoire_agronomie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7839/3764/files/youtube_to_mp3_no_limit.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 2

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_off00004cb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CB0 5252 bytes
SHA-256: dfc8f7143073ef4a198426a14a0659a3353e762bb59be7f6d16e7b23a0848fa5
font_01_sfnt_off00005e8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E8E 9816 bytes
SHA-256: fc13d8f3074c5232cddc278532ff9a00ec40becc122c3ff400c0ebd14d0a908b

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