Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe06f0043ef2fe5a…

MALICIOUS

PDF

54.6 KB Created: 2020-10-29 05:50:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-03
MD5: 470663969d2e19809a6198d36685ae19 SHA-1: 844f7aa65d2d9a72cb9e3f807b362a06fef92547 SHA-256: fe06f0043ef2fe5a707ace8bd906454124a02399015783fed9aea282bd017679
194 Risk Score

Malware Insights

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

The PDF contains a link farm and an image lure that redirects to a malicious URL, likely for phishing or malware distribution. The document body text, while appearing benign, is used to disguise the malicious intent of the embedded links. The ML classifier strongly indicated maliciousness, and the PDF structure suggests it's designed to host numerous links to SEO redirectors.

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://cctraff.ru/wb?keyword=alkaline%20magmatism%20pdf In PDF document text
    • https://s3.amazonaws.com/tuxenipup/approaches_methods_and_techniques_in_language_teaching.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwawibu/zujejatiruwazuxorekubu.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/abnormal_psychology_11th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/binomial_theorem_worksheet_with_answers.pdfIn PDF document text
    • https://soremezu.weebly.com/uploads/1/3/1/0/131070226/wakupejurumu.pdfIn PDF document text
    • https://s3.amazonaws.com/mipeboro/assistive_technology_in_the_classroom.pdfIn PDF document text
    • https://jilukixewe.weebly.com/uploads/1/3/4/0/134042659/gilufatimi_sikefame.pdfIn PDF document text
    • https://vebifejelib.weebly.com/uploads/1/3/0/7/130775119/febexo.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/33916394274.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/57647066973.pdfIn PDF document text
    • https://xujiwedebul.weebly.com/uploads/1/3/4/3/134317386/6583106.pdfIn PDF document text
    • https://jiwepurojal.weebly.com/uploads/1/3/0/7/130775762/nojewofaja.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000094bf.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000094bf.bin)
    • https://uploads.strikinglycdn.com/files/d68bbb86-3529-4139-b9d6-787c84ea2802/kakalowotur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2621/8647/files/psd_to_free_converter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53843696-3f92-4b33-8134-6f474496bf14/julunulameravexejesane.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2094/9403/files/whatsapp_for_dual_sim_android_phones.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/7194/7161/files/food_universe_circular_11212.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1007/2481/files/53043529460.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/1074/3208/files/latitude_and_longitude_practice_worksheets_high_school.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 extracted file (font_00_sfnt_off000094bf.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000094bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94BF 5316 bytes
SHA-256: 2433799ba3d86dc8da20eeff8ad70f869b31a3139c880148565819c7d6971cd1
font_01_sfnt_off0000a6d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6D0 11288 bytes
SHA-256: b9a17bf64adc8278cef3272538597d6cd77b948a657391185be1a1a0bde02732