Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fa0e635fbbe4def…

MALICIOUS

PDF

82.0 KB Created: 2021-04-25 07:31:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 1a6478f1bbc313dfb940aef38b5febcf SHA-1: d3c9c1cbb208c9ed0724ca1b5cb7bb44a01c762e SHA-256: 8fa0e635fbbe4defca66eafde4bdfa72ffc0b235e67e8949bac08b06d7bf4d0f
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to lead the user to a harmful site. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded malicious URL point towards a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • 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.
  • 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/strik?utm_term=how+to+use+swanson+big+12+speed+square In PDF document text
    • http://bonifacy.site/yo-_kai_camiomwi.pdfIn PDF document text
    • https://dowoxadi.weebly.com/uploads/1/3/1/3/131380004/porodu-piwasive-lekimosefevuwan.pdfIn PDF document text
    • https://binikefesomeb.weebly.com/uploads/1/3/5/3/135386190/6769501.pdfIn PDF document text
    • http://gmetry.online/jovuritegogazevudafaza1lvzh.pdfIn PDF document text
    • https://safamitiwifiro.weebly.com/uploads/1/3/0/7/130739579/fuxaz.pdfIn PDF document text
    • https://cdn.sqhk.co/lebinezekoma/bMhLReR/35662283147.pdfIn PDF document text
    • https://cdn.sqhk.co/kigoxeni/ihyiig7/zemusenigapo.pdfIn PDF document text
    • https://cdn.sqhk.co/setuboluraje/amiiR5G/passport_please_game.pdfIn PDF document text
    • https://cdn.sqhk.co/jeforije/D3iihcY/pvc_pipe_3d_model_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/sepagumal/4whghaJ/choppa_style_lyrics.pdfIn PDF document text
    • https://cdn.sqhk.co/dawezizupata/erhbhat/download_game_helix_smash_mod_apk.pdfIn PDF document text
    • http://gooddevice-online.com/what_is_canadian_national_sportdsl3z.pdfIn PDF document text
    • https://sukanoxe.weebly.com/uploads/1/3/1/4/131453950/7000256.pdfIn PDF document text
    • https://cdn.sqhk.co/golemejexeno/7SihWEt/soxadakunabixo.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://pubamawuxa.epizy.com/what_size_shank_does_a_dremel_take.pdfIn PDF document text
    • https://s3.amazonaws.com/dowesitobuga/33703914872.pdfIn PDF document text
    • https://s3.amazonaws.com/najipavez/24109789935.pdfIn PDF document text
    • http://sapakebozo.rf.gd/genodermatoses_a_clinical_guide_to_genetic_skin_disorders.pdfIn PDF document text
    • http://giluzufuropej.epizy.com/how_to_sign_up_for_chick_fil_a_text_messages.pdfIn PDF document text
    • https://s3.amazonaws.com/tawovojo/sistine_chapel_choir_met_gala_performance.pdfIn PDF document text
    • https://s3.amazonaws.com/dofufiri/delivery_acceptance_certificate_form.pdfIn PDF document text
    • https://s3.amazonaws.com/tomaxade/34681361038.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_off0000f1c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1C7 5480 bytes
SHA-256: fd6014e07038abfd76abed573a739373bca320f1549442aa340020cca206f597
font_01_sfnt_off0001047e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1047E 11176 bytes
SHA-256: 6b1bf4503586ae51b388c739ef31e77974c6c1f2393f6ea71cc9d4fb2aec87fb
font_02_sfnt_off00012a83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A83 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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