Malicious PDF — malware analysis report

Static analysis result for SHA-256 f108c552745821c4…

MALICIOUS

PDF

81.0 KB Created: 2021-03-29 04:24:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84a89e29be1a278592a62e09281618e2 SHA-1: de63afe7799b454dd5073d28bc045d77e16dbf9d SHA-256: f108c552745821c4db4a468ff02dad953a6b10dbe96a5597e2a4672c694b0434
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body and embedded URLs suggest a phishing lure related to Instacart promotions, directing users to potentially malicious websites. The presence of embedded URLs and the overall detection score strongly support a phishing or malware distribution attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jumiwimov.ru/wix?keyword=instacart+promo+code+2020+publix
    • https://static.s123-cdn-static.com/uploads/4369324/normal_5fca5ddda5860.pdf
    • https://static.s123-cdn-static.com/uploads/4369182/normal_60001b2e9a448.pdf
    • http://vehicleusains.com/96439397308v7k6z.pdf
    • http://magic-spring.com/hot_springs_prodigy_spa_for_salemq40z.pdf
    • http://nukels.xyz/75844311066d1s30.pdf
    • https://cdn.sqhk.co/bozogekeji/idheQ3O/healthy_road_trip_snacks_vegan.pdf
    • https://cdn.sqhk.co/pigalixow/iifhaYX/manageengine_password_manager_pro_admin_guide.pdf
    • https://cdn.sqhk.co/wazilisiko/mIrgchg/jegatojefusebobuveledive.pdf
    • http://evatopshop.xyz/ap_polycet_2020_notificationj25wr.pdf
    • https://cdn.sqhk.co/wuvitatutuv/hiFifif/rabitibezisojomuraxe.pdf
    • http://prosale.company/119596157829d9x6.pdf
    • http://barajofa.mywebcommunity.org/cowon_plenue_d3_test.pdf
    • http://sportita.fun/jenazukupajipejijetezutb2wid.pdf
    • http://sesesuruko.mypressonline.com/where_can_i_donate_clothes_for_cash.pdf
    • http://kovuzaxaf.medianewsonline.com/challenging_math_word_problems_for_4th_graders.pdf
    • https://cdn.sqhk.co/zomuzuta/KjiibJB/battleship_game_download_free.pdf
    • https://cdn-cms.f-static.net/uploads/4450721/normal_603c78bd1acc4.pdf
    • http://procripton.com/mechanical_engineering_handbook_cornell7rn40.pdf
    • http://fito4ka.xyz/fufedo5mqq5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://ligoroxenafof.atwebpages.com/ziwuberikekesewedajix.pdf
    • http://fugufaza.myartsonline.com/is_real_estate_a_good_investment_in_2020_in_india.pdf
    • http://pizitibasowu.atwebpages.com/case_study_house_22.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_off0000fce6.bin
cff5297a17305aedc648552fa5afba507ec12ede7be050ff4478c8009b332d01
pdf-font-stream PDF embedded font (sfnt) at offset 0xFCE6 5640 bytes
font_01_sfnt_off00010ff5.bin
fcaac006943d703f1e50719feba94cd2390670761b8abdb8ba2cdab590715c13
pdf-font-stream PDF embedded font (sfnt) at offset 0x10FF5 11268 bytes