Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b424f4e28b3de7b…

MALICIOUS

PDF

70.5 KB Created: 2021-03-11 20:22:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 61e6df0429dee697008bb8d1c704d66e SHA-1: ab2c3bcfc2de6257d81b6be06c037898f33f0474 SHA-256: 5b424f4e28b3de7b99a1264a54cb2e910c88bbbf192f89720419301ac0ddf3da
234 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://nipisod.ru/award?keyword=cgegis+table+april+2020+to+june+2020+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4459318/normal_602e65049a7bb.pdfIn PDF document text
    • https://jazawimap.weebly.com/uploads/1/3/5/3/135346256/libalimabuxum-rawafekeboma-dugizekig-supekevutevo.pdfIn PDF document text
    • http://wajulosuju.22web.org/pepunulinegesafokiwot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410965/normal_6043b05c79864.pdfIn PDF document text
    • https://mevinabepoke.weebly.com/uploads/1/3/2/7/132740553/6953044.pdfIn PDF document text
    • https://xuropowupenuba.weebly.com/uploads/1/3/0/8/130813979/pepoxedul_wobudodumomor_zalufazivawene_nosexu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://e1ca4115-fb55-43f9-84f1-eaf814f8c83f.filesusr.com/ugd/18122d_57df8b021b924dc9bb461d879ed4d6d7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/spider_man_ps4_game_for_android.pdfIn PDF document text
    • http://bovuzigaratufob.rf.gd/avro_unicode_font_free.pdfIn PDF document text
    • https://dec4a425-646e-450a-80ca-a73a75d058ad.filesusr.com/ugd/ba3095_2cd0fb452d804452a96ee8b06a7deea1.pdf?index=trueIn PDF document text
    • http://tebuwibuweni.rf.gd/2338991167.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38109fff-f9cb-4ee6-b97d-3e93529f7dda/kegavowifozosuwunapaba.pdfIn PDF document text
    • http://nidawijonag.rf.gd/aldiko_book_reader_mod_apk.pdfIn PDF document text
    • https://60f6da8c-824c-4163-aae9-6195f2ac7ed4.filesusr.com/ugd/7f16bd_f31fe35edc0c4f78819aa89b3fb45754.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/48da466b-6fd6-4ea9-9008-751eae35bd15/ribena.pdfIn PDF document text
    • https://s3.amazonaws.com/pafiganovavi/abcd_2_film_song_mp4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d8a6261-da9d-4c85-813e-e001e309e6a1/what_happens_in_harry_potter_book_6.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6046282d-041a-4e6d-aaa4-de0206652dc4/wotawomokinajekapege.pdfIn PDF document text
    • http://zobibeki.rf.gd/abacus_training_notes.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_off0000d6d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6D8 5604 bytes
SHA-256: 1c09e1c658748264c9dd8570e0a0ae8878c0466bf7d7b8fc7324ad796e6781c0
font_01_sfnt_off0000e9f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9F5 10180 bytes
SHA-256: bcf1181ab23d2110b2c48750da469396c9d94f933e1cfbb56be08c5f90f79acf

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