Malicious PDF — malware analysis report

Static analysis result for SHA-256 dae43688ab57b3b8…

MALICIOUS

PDF

81.0 KB Created: 2021-03-14 21:44:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f6a6d479efb3131ae033217c637eeac SHA-1: 13e0b5bec26a0e461ee0ffc4178e32cc1e5b4255 SHA-256: dae43688ab57b3b8914564aac75e121c7279dfbbfda9fbbfc457657ac1804546
136 Risk Score

Malware Insights

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

The heuristic SE_ADVANCE_FEE_SCAM_LURE strongly indicates the document's purpose is to defraud the user with a fake prize or lottery. The embedded URL https://seumenha.ru/award?keyword=understanding+stock+market+charts+pdf likely leads to the next stage of this scam. While no scripts were explicitly extracted, the PDF structure and the nature of the lure suggest it's designed to trick the user into clicking malicious links, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/award?keyword=understanding+stock+market+charts+pdf
    • http://leaninrzpd.site/65063891931nq2yv.pdf
    • http://salleapp.xyz/kelajuxaruqpme1.pdf
    • http://vinuporabomod.iblogger.org/bank_written_book.pdf
    • http://afracheat6.xyz/ryobi_router_table_base_plateolw4a.pdf
    • http://edayafar.xyz/us_corn_planting_reportgl1xd.pdf
    • http://tersq.fun/mudutibarenisojugubqmtx4.pdf
    • http://aduo5.online/46539154590w7li3.pdf
    • http://copriyghtconfirmed.com/19959487129sy7pe.pdf
    • http://matrixbicycles.com/nedevexibobegenejugemuj54cf.pdf
    • http://greatholl.com/31584251467lbbby.pdf
    • http://usesucre.pro/pl_sql_for_loop_through_arrayls4k0.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/dazutun/abc_s_of_christian_growth_answer_key.pdf
    • https://uploads.strikinglycdn.com/files/92393add-4a90-4038-84b6-a2b8f57fb10e/fuvopok.pdf
    • https://4a5bfc55-71df-4474-8f3e-9f6aca65c64b.filesusr.com/ugd/29b6ce_e297e29ae7c04b24834aa971e0035efe.pdf?index=true
    • https://uploads.strikinglycdn.com/files/7dc6faae-e87a-4bfe-b319-18b2bf844b4b/kivivizaz.pdf
    • http://gapajafikotu.rf.gd/cdc_guidelines_for_influenza_vaccine_2018.pdf
    • https://s3.amazonaws.com/duzexefemosaxe/pupozuzegojudog.pdf
    • https://ac3db616-04cb-40f1-8357-c67041f5e20c.filesusr.com/ugd/eda9ba_31336c56cfa64b95a9a1e5b666d0544a.pdf?index=true
    • https://s3.amazonaws.com/bevarolimesale/singapore_international_arbitration_centre_rules.pdf
    • https://a1c9bafd-2917-4c1b-b79c-a4b44a941470.filesusr.com/ugd/f0f215_2b1847847e7646f8aad5309d6d56a4c9.pdf?index=true
    • https://s3.amazonaws.com/xamibudasagas/81865802380.pdf
    • https://b7eb3c74-9f10-4efd-a612-efb7ea03662f.filesusr.com/ugd/7198c1_66b2cbf7fc5948e09aad773e1a858721.pdf?index=true
    • 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_off0000eebb.bin
bc28c6e7f7eb7ed8c63630df8a56879e458cbbb510d3a71de48d5b9a811170c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEEBB 5380 bytes
font_01_sfnt_off000100d5.bin
a1f00a06a40411a09ce434f11a67de8a3c59a377c71904b14d49fa25bdc04858		 pdf-font-stream PDF embedded font (sfnt) at offset 0x100D5 11448 bytes
font_02_sfnt_off000127d6.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x127D6 4324 bytes

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