Malicious PDF — malware analysis report

Static analysis result for SHA-256 254be3b4009ab7d0…

MALICIOUS

PDF

72.9 KB Created: 2021-02-28 19:14:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: f7d85e512c31853853f8b9f07b8f9403 SHA-1: 9b44ec9189f653dc5bd8f64a2461f8bb5c8a8a0c SHA-256: 254be3b4009ab7d02bb3a3001a05aa34976b5c2e09844286b290ff64a8c21531
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://botokaw.ru/wix?keyword=unit+3+review+answers PDF link annotation
    • https://cdn.sqhk.co/zafupusapun/hhjidIY/como_ver_mi_factura_at_t.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375907/normal_5fe47ff35f25e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479446/normal_6038603fba005.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419452/normal_601aa24387695.pdfIn PDF document text
    • https://cdn.sqhk.co/wowixepis/Q1jfshb/tenegimuwegenivugixosusu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410216/normal_60355f628aa6a.pdfIn PDF document text
    • https://cdn.sqhk.co/dopuwene/hfefXjg/fx_racer_pc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457298/normal_60246c34cc21b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476947/normal_5ff8873f6fa90.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/tomaxade/eva_foam_sheet_roll_buy.pdfIn PDF document text
    • https://s3.amazonaws.com/tugafebip/betway_app_apk_ghana.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/48876124962.pdfIn PDF document text
    • http://zopusawonomiwi.rf.gd/carya_cordiformis_growth_rate.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_off0000e160.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE160 4956 bytes
SHA-256: d28d54fa31270461446a207f7573ad13849b844708d6dc21c5f9e244c7cb2cd7
font_01_sfnt_off0000f262.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF262 10880 bytes
SHA-256: b137718e59c68d499ea8824b184985a05f15ba592306f5d99f15c8ebcd538321