Malicious PDF — malware analysis report

Static analysis result for SHA-256 369b64951afd0942…

MALICIOUS

PDF

73.1 KB Created: 2021-03-07 18:43:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 5f815b27d1bd98edce75709ba5c85918 SHA-1: ac868399c00233e12b498b57b0e2c89739b47c9a SHA-256: 369b64951afd09420f4e110d80b4b65004baee6e78f91c69f08889ffb4d4f2b9
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous embedded URLs, with a primary focus on a URL hosted on disposable infrastructure, suggesting a phishing or malware distribution attempt. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a deliberate attempt to obscure the malicious intent through a large number of links on potentially compromised or disposable domains. The ML classifier and ClamAV detection strongly indicate malicious content, likely a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=algebra+1+common+core+workbook+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4366397/normal_5fdd1b6c881ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408596/normal_600c8eb2d0715.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377109/normal_5ff307a329d4c.pdfIn PDF document text
    • http://fafijitesulexiz.mygamesonline.org/how_to_play_riptide_on_ukulele_beginners.pdfIn PDF document text
    • http://maturibcgj.space/correlative_conjunctions_exercises_multiple_choicelctg9.pdfIn PDF document text
    • http://digitalmicroteter.xyz/the_madwoman_in_the_attic_infection_in_the_sentence_summaryps3x8.pdfIn PDF document text
    • http://zakosemej.mypressonline.com/66356833843.pdfIn PDF document text
    • http://girlita.space/3161538089708lwr.pdfIn PDF document text
    • http://kitafoged.medianewsonline.com/bekuton.pdfIn PDF document text
    • http://losqutoq.online/zirafevuwotawpqhrg.pdfIn PDF document text
    • http://rijupoxog.22web.org/99551174176.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410201/normal_5fed9d256b5b0.pdfIn PDF document text
    • http://uniques.space/inside_out_2015_trailer8hbst.pdfIn PDF document text
    • http://questotzvezd.space/how_to_pair_audio_technica_at-lp60xbt5l5do.pdfIn PDF document text
    • http://bestita.space/autodesk_maya_shortcut_keyskhpum.pdfIn PDF document text
    • http://hopecommunitynaz.com/ge_potscrubber_dishwasher_doesnt_drainnn0dq.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://nixomirorubu.myartsonline.com/tizisaporizix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0b4f3a3-b0ea-499b-9fd8-1651afbf1aa2/zoom_h4n_ext_mic_input.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c57f500-53f6-4b9d-a687-1d910d802803/garmin_etrex_30_user_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b02c5366-70c7-45c2-8809-6332072ecb15/rojapagoripakor.pdfIn PDF document text
    • http://desixomagi.epizy.com/ben_sherman_t_shirt_size_guide.pdfIn PDF document text
    • http://tituroxir.rf.gd/tikid.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d20a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD20A 5292 bytes
SHA-256: 8dcb9b12dc213d22030031225ae6be0cb7ba2533e434f7a4e7e6e6934134ab1f
font_01_sfnt_off0000e3f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3F8 10908 bytes
SHA-256: c273a7a377ac890c53c7b511bb6843ba7cc56b1dc33390966b161924ce509568
font_02_sfnt_off00010888.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10888 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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