Malicious PDF — malware analysis report

Static analysis result for SHA-256 49b38f4351330650…

MALICIOUS

PDF

80.8 KB Created: 2021-04-07 08:12:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa286a8286fa379b38718cbe7ce9de35 SHA-1: 9811007e699b5b8500868b2a71d5b00331f53750 SHA-256: 49b38f435133065018d89baee4589abe407ccf62fd4c7e9328e2a1564b3bcb15
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. The embedded URL and document body suggest a lure for downloading a game app, which is a common social engineering tactic. Although no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a phishing attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

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://xajibur.ru/123?utm_term=frontline+commando+game+app
    • https://cdn.sqhk.co/duwutawuna/hqiiAb1/racing_fever_apk_download_uptodown.pdf
    • http://xuzotudaraderuf.mypressonline.com/arrhythmia_treatment.pdf
    • http://gopidap.scienceontheweb.net/the_bard_of_blood_book_free_download.pdf
    • http://komarovskii.xyz/26562835300gq9hw.pdf
    • http://juvovagesubo.mywebcommunity.org/why_is_my_fridge_water_dispenser_not_working.pdf
    • https://cdn.sqhk.co/vagekasip/90D5wgc/buzolemokiji.pdf
    • http://negozio50sconto.info/kibagus4s1a8.pdf
    • http://komarovskii.xyz/juwozomudabamivinajubuzalmknr.pdf
    • http://detonic-romania.website/nikon_shutter_count_software7itu6.pdf
    • https://cdn.sqhk.co/sisadenev/ieiihce/56042375621.pdf
    • http://getcreditcheck.info/8433950345229ekt.pdf
    • https://cdn.sqhk.co/kisesawaropo/cgdja8P/zombie_road_killer_hack_apk_download.pdf
    • http://beremoter.online/how_to_determine_if_compound_is_ionic_or_covalentsp8ea.pdf
    • https://cdn.sqhk.co/fekigimuzib/2H1icZb/70294769435.pdf
    • http://repair-kvadrokopterov.ru/nj_transit_bus_164_sunday_schedule_1630c373.pdf
    • http://reduslim-italiaoficial.site/28408733587plyf0.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/3684ed43-2005-4559-8960-0fb10ea98c6e/kenmore_elite_steam_dryer_not_heating.pdf
    • http://pofijiserige.onlinewebshop.net/sanitary_engineering_lecture.pdf
    • https://uploads.strikinglycdn.com/files/7be5d1ab-aead-438b-8f56-85377770f77f/tinder_cheat_codes_connor.pdf
    • https://s3.amazonaws.com/muvazi/sims_3_cc_skin_sims3pack.pdf
    • https://s3.amazonaws.com/sasufufa/mumajar.pdf
    • https://uploads.strikinglycdn.com/files/3ecaf28c-0d3b-4122-83bd-68c34127e71a/comptine_dun_autre_t_guitare_tuto.pdf
    • https://s3.amazonaws.com/dagasopones/how_to_open_jawbone_mini_jambox.pdf
    • https://s3.amazonaws.com/nafamaragisek/39300866464.pdf
    • https://s3.amazonaws.com/piradi/rotikefotuvam.pdf
    • https://uploads.strikinglycdn.com/files/2bc35eeb-f9a0-4562-b40c-3ca4bde14165/how_to_lighten_up_dark_rooms.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f20c.bin
48a4af980812a832ce752ef00b8be33e7665b9a8cda66ac43cc5bd3fadef8fce		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF20C 4960 bytes
font_01_sfnt_off000102cb.bin
df4122375b4c82cee0db9797ca07de02eedc50a2a873c95210d8085d3c60add8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x102CB 10656 bytes
font_02_sfnt_off0001273f.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1273F 4324 bytes

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