Malicious PDF — malware analysis report

Static analysis result for SHA-256 f97825f5ed28174e…

MALICIOUS

PDF

73.6 KB Created: 2021-04-03 20:46:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 63c2acaff8834b6158f08fb35dd4a814 SHA-1: a623332f7c3e242e00bd0365c90c67cf5385a340 SHA-256: f97825f5ed28174ed33621becf8578620005072bb01a3baa67e0338cafc16513
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many of which point to potentially malicious domains, suggesting a link farm or phishing attempt. The document body, though partially corrupted, contains text related to search queries, reinforcing the idea that it's designed to trick users into visiting external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://xajibur.ru/strik?utm_term=stats+modeling+the+world+ap+edition+chapter+8+answers PDF link annotation
    • http://fulifubajamo.mywebcommunity.org/26573016762.pdfIn PDF document text
    • http://sopafekidis.sportsontheweb.net/byzantine_art_and_archaeology.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453560/normal_60009f64bc6ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404313/normal_602797794dd36.pdfIn PDF document text
    • http://bifitiguz.iblogger.org/yealink_t48s_spec_sheet.pdfIn PDF document text
    • http://vafutixon.22web.org/telugu_bible_with_references.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374211/normal_6064fb7896fac.pdfIn PDF document text
    • https://ripapexogona.weebly.com/uploads/1/3/0/8/130874469/pugotimajividusero.pdfIn PDF document text
    • http://fawaxifiwuzodil.scienceontheweb.net/lenguaje_musical_melodico_1_ediciones_si_bemol_descargar.pdfIn PDF document text
    • https://zobegutibeg.weebly.com/uploads/1/3/4/9/134902349/693707.pdfIn PDF document text
    • http://gejudoxe.mypressonline.com/99598174089.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
    • https://s3.amazonaws.com/tesotiwapax/da_form_3161_continuation_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/toro_super_blower_vac_51618_manual.pdfIn PDF document text
    • http://vavebidogorul.rf.gd/63537306025.pdfIn PDF document text
    • https://s3.amazonaws.com/suxugipipolazog/cute_cartoon_couple_wallpapers_free.pdfIn PDF document text
    • https://s3.amazonaws.com/baposivarabuj/86169038609.pdfIn PDF document text
    • http://fapegilijaz.rf.gd/jaxasaniw.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubifirigevi/rebugarepipobudefemuna.pdfIn PDF document text
    • http://tiluxusimutine.atwebpages.com/biology_of_belief_drive.pdfIn PDF document text
    • http://togevutifakumag.rf.gd/always_bon_jovi_partitura_piano.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_off0000d5a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5A5 5664 bytes
SHA-256: 184ba989c694c320cf23f992c74086476fad9ea2b480e524af5ddfb7476b8ff5
font_01_sfnt_off0000e8c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C1 10236 bytes
SHA-256: 2b18b7e6b82491a08a458a31fc392535f44f338247e14a3cdc434f2dd66e9afd
font_02_sfnt_off00010b9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B9E 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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