Malicious PDF — malware analysis report

Static analysis result for SHA-256 a87f534c9eb54124…

MALICIOUS

PDF

81.6 KB Created: 2021-03-14 20:31:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 971cf0b60f674c9e17322e737329daf0 SHA-1: 3b2ebcac99d501c35b87bd32930d2b193f0ce86d SHA-256: a87f534c9eb5412419085a64d2175af836ea64a305ac60f24248555311690eeb
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is a strong indicator of malicious intent. The ML classifier and ClamAV detection further confirm its malicious nature. The document body, though heavily obfuscated, suggests a lure related to 'movie lovers apk', aligning with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jacksth.ru/wix?keyword=movie+lovers+apk PDF link annotation
    • https://cdn.sqhk.co/neseleko/oif3C6W/ahhh_sound_meme_button_down.pdfIn PDF document text
    • https://cdn.sqhk.co/rijujonakuje/bijuUig/nepali_top_up_free_fire.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455185/normal_6030258d25708.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411944/normal_5fd8ffaff3025.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470226/normal_5fda0bcbb5e35.pdfIn PDF document text
    • https://cdn.sqhk.co/nefukale/ghhghe5/takeuchi_tb240_owners_manual.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380699/normal_602e331c5f723.pdfIn PDF document text
    • https://cdn.sqhk.co/torazanopuni/jaNge0D/bubble_tea_emoji_discord.pdfIn PDF document text
    • https://cdn.sqhk.co/lesebonun/iDuujcM/confederate_states_constitution.pdfIn PDF document text
    • https://cdn.sqhk.co/gitesafuwu/geijphe/lepevikitibudukuxa.pdfIn PDF document text
    • https://cdn.sqhk.co/zezetemirag/n6Zgdpk/idle_miner_tycoon_mine_manager_simulator_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/xefijumu/iii4A30/sexerulemusexolo.pdfIn PDF document text
    • https://cdn.sqhk.co/gimanoretev/jys9dhe/funny_horror_game_youtubers.pdfIn PDF document text
    • http://wowosuseje.22web.org/55433730703.pdfIn PDF document text
    • https://cdn.sqhk.co/xizubulizexe/dJTgjHA/dr_driving_apk_mod_ios.pdfIn PDF document text
    • https://cdn.sqhk.co/lididiregi/xjejehi/4runner_for_sale_near_me_under_5_000.pdfIn PDF document text
    • https://cdn.sqhk.co/mugodetutag/ibjfhd9/49854551253.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427091/normal_6009e9aacef4c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wedutatitupaze.epizy.com/89834326874.pdfIn PDF document text
    • http://pevivudawof.epizy.com/tokutogilevenizawigota.pdfIn PDF document text
    • http://jovebaben.epizy.com/bixumudise.pdfIn PDF document text
    • http://jobubiro.epizy.com/75153669307.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_off0001019a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1019A 4940 bytes
SHA-256: f59c4c1a1e10355977eb7c1e3813bbb428ca162c9a05f60e33a8238a5f3b4eef
font_01_sfnt_off00011287.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11287 11484 bytes
SHA-256: 940447d454dec3787b8be47588d791b4f5ba93961a0adb8ec54c9c8e88bd7d20

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