Malicious PDF — malware analysis report

Static analysis result for SHA-256 a11506714dad390d…

MALICIOUS

PDF

417.8 KB Created: 2021-03-20 00:34:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8abc261fcc86ed5e754d20be4138df0e SHA-1: 7598d6cacae06f5cc96fefa2aead1112a46b7908 SHA-256: a11506714dad390d790b4943735b6eccd753e4bd67d75943601c84b936937d76
136 Risk Score

Malware Insights

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

The PDF document contains heuristics indicating an advance-fee scam, a common lure for phishing and fraud. It embeds an external URI pointing to a suspicious domain, likely intended to host malicious content or redirect the user. While no scripts were explicitly extracted, the ML classifier and ClamAV detection strongly suggest malicious intent, likely involving a PDF-based exploit or redirection to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9876

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://leonvi.ru/award?keyword=n3+vocabulary+list+pdf
    • https://cdn.sqhk.co/surodamiz/2YjbkQf/vegan_gluten_free_easter_dessert_recipes.pdf
    • https://cdn.sqhk.co/rosomugimo/E2jihiO/91803173038.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/fda086b8-23c4-4552-8415-e47f9d1e36da/posiminokosazuwumo.pdf
    • http://wisezeji.epizy.com/briggs_and_stratton_parts_for_sale_near_me.pdf
    • https://s3.amazonaws.com/sezewu/azadi_movie_audio_song.pdf
    • https://uploads.strikinglycdn.com/files/30f31eff-a1be-4f19-be81-11a5431ea962/what_temperature_should_water_tank_be_set_at.pdf
    • https://4b0cdf75-2e42-4830-99f1-bbdbaec3f661.filesusr.com/ugd/891219_09cc824907994e97a2a8752ab6542dc1.pdf?index=true
    • http://wudobez.rf.gd/bass_guitar_strings_guide.pdf
    • http://mefadagisi.rf.gd/how_to_train_yourself_for_mental_toughness.pdf
    • https://s3.amazonaws.com/vesubodufisi/zogezetozuvitunefaw.pdf
    • https://uploads.strikinglycdn.com/files/1b397367-783a-4e3e-a724-2fe827475f46/warforged_rogue_names.pdf
    • http://nozosikela.rf.gd/cowboy_bebop.pdf
    • https://05282879-aed3-4f16-ac14-d534add4d4bd.filesusr.com/ugd/0f8b7c_c3dcdaeff35e45ba848934557126c381.pdf?index=true
    • https://uploads.strikinglycdn.com/files/ea2d17c7-cd00-46dc-af6b-a9daae6ef22a/vector_calculus_marsden_solutions.pdf
    • https://uploads.strikinglycdn.com/files/e8980995-989e-4b06-8a13-0b6d1b9e4cd7/pelizugoror.pdf
    • https://uploads.strikinglycdn.com/files/bf48c718-9128-4c1e-b495-89bc14337f39/36944422502.pdf
    • https://0fdd9f25-8366-4660-9463-376fd915ad39.filesusr.com/ugd/c16cf9_3ef24a5c31bc4ce4babc1cd08af23224.pdf?index=true
    • https://s3.amazonaws.com/lanubili/how_to_use_health_o_meter_baby_scale.pdf
    • https://uploads.strikinglycdn.com/files/4f946aba-df71-4243-a61d-d4c4c7306438/xemumisubelipoxifanamufa.pdf
    • https://8c805f22-5240-4a8e-9b4d-8499607ff1fc.filesusr.com/ugd/76156b_505a43a16ed44869a6a37e9f41cc3c09.pdf?index=true
    • https://uploads.strikinglycdn.com/files/c6940616-2c37-499d-8418-7a6c25534116/38236694345.pdf
    • https://s3.amazonaws.com/nalifij/braun_strowman_theme_song_2019.pdf
    • https://7c9e9c40-2b96-4f88-8065-b5ff5e495659.filesusr.com/ugd/3bfcae_c6fcc060f62d45229daf5c521c3b0934.pdf?index=true
    • https://uploads.strikinglycdn.com/files/f7883a19-79e7-493b-9b51-efd2a67223ad/grasslin_timer_fm_1_stuz-l.pdf
    • https://s3.amazonaws.com/wozowuledij/2_digit_subtraction_with_regrouping_worksheets_2nd_grade.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
stream_003_off00022275.bin
889679507124d33a67997f2dd8c463af3b7b66391fd890c3dd0fc4cd4fb9e801		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x22275 368788 bytes
font_01_sfnt_off0006427c.bin
e510a547d3eacd39945a42ac613b7cd137b889ffe2a9868d9a6cf7347ae4dcb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6427C 5584 bytes
font_02_sfnt_off00065595.bin
db230d9fe62a6c1935211cabbd5d9108d44fe25f9d5c3c2e80f3324f8907114e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65595 10520 bytes

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