Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5d7fd31935abd71…

MALICIOUS

PDF

88.2 KB Created: 2021-02-02 19:15:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-07-06
MD5: fc4df650c2e38fe7d76838f18c2da16e SHA-1: 72300acefb1d9a582a3b256377e4920ef8f8843a SHA-256: b5d7fd31935abd7107638cc0af9ad642a73b798f0e6cd40200652e7ba0551360
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://crophysi.ru/wb?keyword=formal%20maternity%20wear%20canada In PDF document text
    • https://cdn-cms.f-static.net/uploads/4485016/normal_60145cb752f64.pdfIn PDF document text
    • https://s3.amazonaws.com/sixenogafopoj/free_signal_booster_app_for_android.pdfIn PDF document text
    • https://cdn.sqhk.co/xarozowuzosa/agfjINJ/disenivopaxa.pdfIn PDF document text
    • https://vidimepimexuja.weebly.com/uploads/1/3/4/6/134626803/2660156.pdfIn PDF document text
    • https://kifoguwo.weebly.com/uploads/1/3/1/3/131383532/zonaxurirobuzuz.pdfIn PDF document text
    • https://cdn.sqhk.co/fematixub/edg1FaY/zizopafebajotevokoloda.pdfIn PDF document text
    • https://xuxufidumexed.weebly.com/uploads/1/3/2/6/132681394/1013429.pdfIn PDF document text
    • https://s3.amazonaws.com/guxosa/new_year_wishes_business_email_template.pdfIn PDF document text
    • https://ruwuzeget.weebly.com/uploads/1/3/4/7/134755445/wanidexisovin-kugigetanal.pdfIn PDF document text
    • https://cdn.sqhk.co/rapowipijes/zxgefM5/ropabu.pdfIn PDF document text
    • https://s3.amazonaws.com/metakibeme/5370622086.pdfIn PDF document text
    • https://s3.amazonaws.com/dazovosugev/autocad_civil_3d_2013_free.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_01_sfnt_off000105f4.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_01_sfnt_off000105f4.bin)
    • http://nugafafekovad.epizy.com/top_10_interview_question_and_sample_answers.pdfIn PDF document text
    • http://webubekesivamuf.epizy.com/argumentative_essay_topics_2018.pdfIn PDF document text
    • http://moliwofasekimu.epizy.com/crystal_reports_totext_remove_comma.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
    • https://savannah.gnu.org/projects/freefont/In extracted file (font_00_sfnt_off0000f5fe.bin)
    • http://www.gnu.org/licenses/In extracted file (font_00_sfnt_off0000f5fe.bin)
    • http://www.gnu.org/copyleft/gpl.htmlIn extracted file (font_00_sfnt_off0000f5fe.bin)
    • http://scripts.sil.org/OFLIn extracted file (font_01_sfnt_off000105f4.bin)
    • http://dejavu.sourceforge.netIn extracted file (font_03_sfnt_off00013de6.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_03_sfnt_off00013de6.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f5fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5FE 6440 bytes
SHA-256: edf517a561ed5132c6c1d5718ac6ff9d870a00e6f43a91762fd168a2279cca75
font_01_sfnt_off000105f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105F4 5056 bytes
SHA-256: 19be5c04df508245b80276eac6bae62e1e24518d70f6535725b096800990e4cc
font_02_sfnt_off0001171f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1171F 11580 bytes
SHA-256: 858b8bb65a7d25dd1cf5ae8ca08262aef1ecf65fc55c0d98a6c06b60e5dc8b6d
font_03_sfnt_off00013de6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13DE6 16240 bytes
SHA-256: a9153e1a8da41f5f2eb2db3f5b9d99ccf4c3620665061e40ff17007d10ae8e55