Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8d169c6c272f2b2…

MALICIOUS

PDF

82.7 KB Created: 2021-04-02 14:34:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71b8478102c24bd888fff15d6753f74c SHA-1: d5f7987045600b2c78faf15b38e3428402a1145d SHA-256: e8d169c6c272f2b2cd50a5f9c20e0b5c0ce702fde347d9007cb8eb9b394aa24d
96 Risk Score

Malware Insights

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

The file is a PDF document that contains multiple embedded URLs, one of which is flagged as malicious. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of embedded URLs suggests the document is designed to redirect the user to malicious sites, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://vilenefex.ru/strik?utm_term=cake+baking+business+plan
    • http://nitapida.mywebcommunity.org/buxujibinujo.pdf
    • https://cdn.sqhk.co/fedelubu/zapygcj/49614929574.pdf
    • http://tafugegajotu.mygamesonline.org/71543452505.pdf
    • https://wirupexulabajes.weebly.com/uploads/1/3/5/3/135322132/e8af64f0e788e68.pdf
    • https://cdn-cms.f-static.net/uploads/4420449/normal_604ddbbd6e8c7.pdf
    • http://vukojekan.mypressonline.com/vofebadorubisudotu.pdf
    • http://fudazozotakaxal.mywebcommunity.org/miocardiopatia_dilatada_2020.pdf
    • https://cdn.sqhk.co/pujimuxuja/foEzmpZ/low_fare_flights_to_orlando.pdf
    • http://zenajok.medianewsonline.com/free_printable_may_2020_calendar.pdf
    • http://futigovu.scienceontheweb.net/wamorokamabipikanisenuwa.pdf
    • http://raguvigawak.mypressonline.com/marketing_information_system.pdf
    • http://tesekiwig.scienceontheweb.net/basic_accounting_exercises_with_answers.pdf
    • https://tepidupelagoxu.weebly.com/uploads/1/3/4/4/134472529/489a616fa.pdf
    • https://cdn-cms.f-static.net/uploads/4459621/normal_600dd03d6ce8a.pdf
    • https://lezafopiga.weebly.com/uploads/1/3/4/6/134628758/4027762.pdf
    • http://nibakelenixezas.getenjoyment.net/cognitive_affective_and_psychomotor_domains.pdf
    • https://static.s123-cdn-static.com/uploads/4476569/normal_5ff23508ca767.pdf
    • https://posodukur.weebly.com/uploads/1/3/4/3/134347560/938813.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://gixejemazob.myartsonline.com/96095280034.pdf
    • http://xumuritikoxuk.myartsonline.com/lalejuzemofeso.pdf
    • http://vidilig.onlinewebshop.net/visual_data_storytelling_with_tableau.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001088e.bin
a714e9067ad6d35768c82ec31df9756f7926c367a3c7d6c07cc8d8435ec886f0
pdf-font-stream PDF embedded font (sfnt) at offset 0x1088E 5000 bytes
font_01_sfnt_off000119a9.bin
7433682f8b67b58bfa1d4c6255de5228d67e8959f3c6413423f9201156b2ccad
pdf-font-stream PDF embedded font (sfnt) at offset 0x119A9 10532 bytes