Malicious PDF — malware analysis report

Static analysis result for SHA-256 71a18971a01d9946…

MALICIOUS

PDF

132.6 KB Created: 2021-03-21 01:25:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: fa3608e9f8ed6e7773bcd79d1cd3be21 SHA-1: d6052a8bc84ae3e1abb204908bb6a072f79f7d3b SHA-256: 71a18971a01d9946afb6b241a745b0f3dd99f92a37421c7c464e9bffa7a045fe
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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://maypoin.ru/123?utm_term=god+narasimha+songs+in+tamil PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388041/normal_5fd2c0f41252b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500183/normal_5fdd699f13460.pdfIn PDF document text
    • https://cdn.sqhk.co/kelanadu/6vWCXio/sawoka.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425227/normal_60070caa1a7d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482190/normal_600a0f2495759.pdfIn PDF document text
    • https://cdn.sqhk.co/jesovolavig/h8E78hg/game_of_sultans_vizier_skill_level_up.pdfIn PDF document text
    • https://cdn.sqhk.co/vabalogu/VgiYIjf/94935066051.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424347/normal_5fd61578c3e1c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/lekelepowo/getz_pharma_annual_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/326b3622-013d-4ed0-83c0-9ea8879500c2/how_to_apply_for_a_job_at_zaxbys.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/132afda4-60ff-4b27-b98a-92bea2bb5e8b/47124422817.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83b81065-8495-4279-8f9f-2c1821c9826f/54321121437.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a97e25a-6511-4070-ae05-e3228576f3a8/hasselblad_500c_medium_format_film.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aeeb9dfa-6997-4637-bbbe-8649c419936d/how_many_episodes_will_be_in_attack_on_titan_season_4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74341a6a-3271-4eee-891a-8445f8393c2e/rajejiresupokizofedumapu.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/hp_photosmart_c4780_wont_scan_to_computer.pdfIn PDF document text
    • https://s3.amazonaws.com/latufenaw/ansel_adams_books_free.pdfIn PDF document text
    • https://s3.amazonaws.com/ligole/foxikigawezukojije.pdfIn PDF document text
    • https://s3.amazonaws.com/wupixufekijax/how_do_you_set_the_timer_on_a_biasi_boiler.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000181b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x181B6 3812 bytes
SHA-256: 2af6095f784abcfcaed963dfe43ec7d0e0e8228ca94b72327cfa16f57b670cb8
font_01_sfnt_off00018e0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18E0A 4940 bytes
SHA-256: 9132a385a269c169578ec16cebea33b04907d99ccd43a2710e6bcdc8baea9531
font_02_sfnt_off00019e9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19E9B 2884 bytes
SHA-256: 880a8992ba19b7c43c95518d446753869797910d541a87a91c017a5f523c0ee7
font_03_sfnt_off0001aa7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AA7D 3772 bytes
SHA-256: 4cd60777e265fafd80a6c4ac8a8f541642313e2b1c6670a3899fdf55b12f51bc
font_04_sfnt_off0001b622.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B622 13240 bytes
SHA-256: 9c2dba40c0318f420c37c7d578a9cb29835bdb2960a77fd4bc748e23f7a703e2
font_05_sfnt_off0001df62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DF62 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
font_06_sfnt_off0001ed62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1ED62 6180 bytes
SHA-256: ba028f9abd12681ad5e40776c9f214443604fb273b1ededc4b8ee424c5ebcc35

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