Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b7ca7d528254a79…

MALICIOUS

PDF

75.9 KB Created: 2021-04-17 09:09:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5127550213b9b000245533b19c418614 SHA-1: 7d8d94022b8a1ae2b0c8a8dca358736b3a4d1349 SHA-256: 6b7ca7d528254a79f5beb00645fcb08d4649b9fbf99d8b7939ebfadcfeb92130
196 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which are part of an SEO link farm designed to redirect users. The document body, though heavily obfuscated, contains text related to 'Troy bilt lawn mower blades near me' and references to wkhtmltopdf, suggesting a lure for search engine traffic. The presence of a PDF_SEO_LINK_FARM heuristic and multiple external URIs indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://jumiwimov.ru/strik?utm_term=troy+bilt+lawn+mower+blades+near+me PDF link annotation
    • http://magazok.top/lomeneviv4b08.pdfIn PDF document text
    • http://jelojutu.sportsontheweb.net/zutojewixozavi.pdfIn PDF document text
    • https://s3.amazonaws.com/gotijejaj/annabelle_creation_movie_in_tamil_free.pdfIn PDF document text
    • https://s3.amazonaws.com/woberiz/sazesuvijumaworatumul.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467017/normal_5fd7cbac838fd.pdfIn PDF document text
    • https://s3.amazonaws.com/jojitagifuva/manpower_planning_excel_template.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454426/normal_600be5ebb7131.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/tibifalat.pdfIn PDF document text
    • http://idealicaitalia-ufficiale.site/is_nesquik_strawberry_milk_good_for_youtoi8e.pdfIn PDF document text
    • https://s3.amazonaws.com/degisapemifa/49582902763.pdfIn PDF document text
    • http://kvyovk.xyz/2012_toyota_highlander_limited_consumer_reviewsklexz.pdfIn PDF document text
    • https://s3.amazonaws.com/tojabixefova/wisowiduloxejozuwe.pdfIn PDF document text
    • http://lipenav.mypressonline.com/porque_el_amor_de_mi_alma_solito_me_dejo_letra.pdfIn PDF document text
    • https://s3.amazonaws.com/zozuxukoxo/chennai_express_full_movie_filmywap_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/genijusemu/good_conundrums_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/kasoxikalisufupogojo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://0793e221-2e7e-4176-aae8-4ff4b75d8f7a.filesusr.com/ugd/64bd79_a5bc4c785b0948dc90d92dfa3dbe51be.pdf?index=trueIn PDF document text
    • https://198d5876-2e36-4a54-a59d-b4c1060b65be.filesusr.com/ugd/4733ca_9d650faaa34a4e2f871c099cfc2ad0dc.pdf?index=trueIn PDF document text
    • http://futakanawus.onlinewebshop.net/12154535501.pdfIn PDF document text
    • https://c4bedd8b-a3e9-4aa8-9751-a6fde4035b7e.filesusr.com/ugd/037f08_b0d2cb1abbfa4ad29e441cb48867ad69.pdf?index=trueIn 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBC0 5252 bytes
SHA-256: 65a088d99836e2017acc8fb92af1352944f91c927f934d66d2262a8b41873412
font_01_sfnt_off0000fd9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD9A 11012 bytes
SHA-256: 28055c2abbf151625dc1ad13de032739024cce93fdbbf4a547d361676b3ea0de