Malicious PDF — malware analysis report

Static analysis result for SHA-256 801ca0848b34fdf1…

MALICIOUS

PDF

82.0 KB Created: 2021-04-05 06:26:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9409c0e338402f8bd8f27b0f9d667c8b SHA-1: e4d584b00aa249cab47d49649709bd2ae9af2633 SHA-256: 801ca0848b34fdf13bb32190a349e439ca02cb841ffd88e506205eca2b214158
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, exhibiting characteristics of both advance-fee scams and recovery secret lures. It contains multiple embedded URLs, one of which is a known malicious domain, suggesting it is designed to trick users into revealing sensitive information or engaging in fraudulent transactions. The document's structure and heuristic firings strongly indicate a phishing or scamming attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://seumenha.ru/strik?utm_term=oops+concepts+in+java+for+beginners
    • https://cdn.sqhk.co/pajokiman/hijSgiN/13959028943.pdf
    • https://static.s123-cdn-static.com/uploads/4446378/normal_6003644fa1524.pdf
    • https://cdn.sqhk.co/nojedajoze/auX4bgh/super_toss_the_turtle_apk_mod.pdf
    • https://cdn.sqhk.co/laripikiwafo/jchageJ/rumble_strips_cost.pdf
    • https://cdn.sqhk.co/bimeniwog/hbgeggn/vmware_esxi_6._7u3.pdf
    • https://cdn.sqhk.co/lulufebexefe/gfShggc/vanilla_cake_recipe_video_download.pdf
    • http://dokuloraxu.22web.org/avg_sality_remover_free.pdf
    • https://cdn.sqhk.co/jotenitix/jxdhaoF/temuxubifefura.pdf
    • https://cdn-cms.f-static.net/uploads/4451027/normal_5fdc196c18fb8.pdf
    • https://cdn.sqhk.co/tusumawibe/nlvmnrF/barbie_doll_game_app.pdf
    • https://cdn.sqhk.co/zusisoko/bjj0ggz/manchester_medicine_non_academic_information_form.pdf
    • https://cdn.sqhk.co/metajewamiva/cibVIL2/boomerang_movie_review_dinamalar.pdf
    • http://winokuzovew.iblogger.org/88809203005.pdf
    • https://static.s123-cdn-static.com/uploads/4471484/normal_60071ea8f23ed.pdf
    • https://cdn.sqhk.co/bugolajoxodu/aQQWjaq/node_runtime_stack_azure.pdf
    • https://cdn-cms.f-static.net/uploads/4501993/normal_60638db487ecf.pdf
    • http://wulutano.mywebcommunity.org/annona_senegalensis.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://vawivulumekil.onlinewebshop.net/florida_boat_bill_of_sale.pdf
    • http://soranodabiwegi.myartsonline.com/19639472354.pdf
    • https://s3.amazonaws.com/semuxemakaw/niels_bohr_atomic_physics_and_human_knowledge.pdf
    • https://s3.amazonaws.com/gazitif/deltascape_v1_savage_guide.pdf
    • http://matowozor.epizy.com/luvepowukegafogawigi.pdf
    • https://s3.amazonaws.com/xufaxoferugod/pubiturozujopebawasifapi.pdf
    • http://refewededuxita.epizy.com/imagenes_de_dragon_ball_z_androide_16.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_off0000fe96.bin
c307e4e0a1e9486bbd9249a56fdb3b137c0c186973bf18035b9ccb97fb5b81a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE96 5456 bytes
font_01_sfnt_off0001113e.bin
0263ded967d404cfa6c504139f0e3f00a2a2b21aa352dbefd5566ab69309db47		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1113E 11544 bytes

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