Malicious PDF — malware analysis report

Static analysis result for SHA-256 461a5e14cc4eda4d…

MALICIOUS

PDF

89.4 KB Created: 2021-04-04 13:31:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 007bc7d78e18b93bd8993d826fb4045d SHA-1: 305bdfb02caceee61f536e673a91e30cf39104a4 SHA-256: 461a5e14cc4eda4d0f1bee7a18cfb78b83a8e29207873f995f9c668e59249032
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 0.9967

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://golowaki.ru/award?keyword=sample+feedback+comments+for+student+writing+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4411944/normal_6007dc706301f.pdfIn PDF document text
    • http://lestyprin.online/52728163623wbbwh.pdfIn PDF document text
    • https://cdn.sqhk.co/wemowubire/d5jhHrc/xexidewudikesabava.pdfIn PDF document text
    • http://cosmosqrab.online/7167840536979i0g.pdfIn PDF document text
    • https://cdn.sqhk.co/vejanozugova/SkLhgib/picsart_editing_png_zip_file.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502563/normal_5ffcda4aebc47.pdfIn PDF document text
    • http://usblighter24.site/mapokomezozidunhnqq0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471099/normal_60563ca09586e.pdfIn PDF document text
    • https://cdn.sqhk.co/gofelaxes/gdjfmjg/o_tera_happy_birthday_song_audio.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393908/normal_6064baeac15b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416501/normal_6023b603bb853.pdfIn PDF document text
    • https://cdn.sqhk.co/zevijevam/fNjjwhc/sejazobugomevuzab.pdfIn PDF document text
    • http://devgame.design/physical_chemistry_10th_edition_by_pqdz3z.pdfIn PDF document text
    • https://cdn.sqhk.co/mimofeto/jhiFhes/91976578895.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/radubozufiwo/multidimensional_poverty_index_report_is_released_by.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa71b0cd-65a6-4f84-afd1-2100fde14750/do_vivid_dreams_mean_good_sleep.pdfIn PDF document text
    • https://s3.amazonaws.com/musoxifuvitalo/winisinudokaboditatisa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ab2b947-5ded-4382-9aa5-5dabc5a592c5/what_does_code_f21_mean_on_a_whirlpool_duet_washer.pdfIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/mp4_video_online_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/65766594460.pdfIn PDF document text
    • https://s3.amazonaws.com/palevijuj/55862093132.pdfIn PDF document text
    • https://s3.amazonaws.com/remufuzu/converter_to_dwg_autocad_2016_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cde4fcf-5636-4ca6-815c-d8e23ad38f33/toruwowegejukotun.pdfIn PDF document text
    • https://s3.amazonaws.com/libosokune/boiler_maker_cv.pdfIn PDF document text
    • https://s3.amazonaws.com/veledabejufi/que_significa_juicio_final_en_la_biblia.pdfIn PDF document text
    • https://s3.amazonaws.com/jukezeluf/vusedulituwovunevug.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_off00011c65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C65 5872 bytes
SHA-256: 87f1a103672bb41eb7b87a749aff0867b7837fc0367e90e757cd9099881f399f
font_01_sfnt_off00013061.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13061 11476 bytes
SHA-256: cd83f26602b53cfc66f546b66a5a80ddbade7729c7ccae8a89d2d8a0d4425a59

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