Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab626699cbfe616b…

MALICIOUS

PDF

82.7 KB Created: 2021-03-28 13:52:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ba8296b61e9b433c152e41e15cc90500 SHA-1: da0e63017d64a1f02d35afd7dc03e09463d587f9 SHA-256: ab626699cbfe616b65f66058f7189c2bd0261b6c1e9db16b305895d663adbc4e
134 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to known malicious infrastructure, specifically identified as a redirector for SEO-based phishing lures. The ML classifier strongly indicates maliciousness, and the presence of redirector links suggests an attempt to lure users to a compromised site, likely for credential harvesting or malware delivery. No scripts were extracted, but the primary attack vector appears to be the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 4

  • 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.
  • 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://dafemum.ru/award?keyword=cambio+climatico+en+mexico+pdf+2020 In PDF document text
    • http://bigmagazin.xyz/g50-45_laptop_lenovo_-_type_80e3_specsi3e1c.pdfIn PDF document text
    • https://cdn.sqhk.co/fixefalid/dq6rm1E/slendrina_the_cellar_2_mod_menu_apk_download.pdfIn PDF document text
    • http://gipovasota.sportsontheweb.net/36669749868.pdfIn PDF document text
    • https://cdn.sqhk.co/lonubugogere/jjPjfWy/come_fare_sticker_personalizzati_su_whatsapp.pdfIn PDF document text
    • https://cdn.sqhk.co/fomezawelud/cvQgiii/30429123315.pdfIn PDF document text
    • http://tonipoj.iblogger.org/bwssb_new_connection_application_form.pdfIn PDF document text
    • https://cdn.sqhk.co/xedomobedusi/KggXFhh/37371532407.pdfIn PDF document text
    • http://stixlife.info/5956599512978sr1.pdfIn PDF document text
    • http://itnegozio.info/fofebodemegen9dra.pdfIn PDF document text
    • http://golden-bridge.pro/dulumedolidn16g.pdfIn PDF document text
    • https://cdn.sqhk.co/verikiweneza/Oiajad1/western_sniper_wild_west_fps_shooters.pdfIn PDF document text
    • http://hyipinvest.site/transportation_math_worksheets_for_preschoolersh4447.pdfIn PDF document text
    • http://jakufodunod.getenjoyment.net/danodudusidupujimamizor.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jinotugiwomo/60010396624.pdfIn PDF document text
    • http://nulibipegetoko.epizy.com/college_admission_application_letter.pdfIn PDF document text
    • http://verirajoxa.epizy.com/handover_report_letter.pdfIn PDF document text
    • https://s3.amazonaws.com/rewepalazamiso/diwimapexuzudu.pdfIn PDF document text
    • https://s3.amazonaws.com/xijalovelokolep/lemony_snicket_series_of_unfortunate_events_books.pdfIn PDF document text
    • http://sutekotuluzuwed.rf.gd/what_are_the_4_elements_of_a_valid_contract.pdfIn PDF document text
    • http://vexabimumemig.atwebpages.com/around_the_world_in_80_days_ebook_download.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/bamufitididerujonadi.pdfIn PDF document text
    • https://s3.amazonaws.com/poguvelefa/tivonoke.pdfIn PDF document text
    • https://s3.amazonaws.com/fokapikow/antivirus_mcafee_gratis_italiano.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ff30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF30 5416 bytes
SHA-256: d7eb112e01adf550c980a6c1dd658b4273ee69c4cc36f064f005f85572615f61
font_01_sfnt_off0001118c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1118C 13300 bytes
SHA-256: 43fc42b6c1ade66b393b561221cb8e6fbfba1e3dbff2cd0e54adb3e415fe6ff6

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