Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab7219ed6deff9d0…

MALICIOUS

PDF

86.9 KB Created: 2021-04-16 03:20:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: b7a73d70cd3a5c976dd911e86ee2c83d SHA-1: c883dbea77b82986ef3d6dfb476fa0e4fd97630a SHA-256: ab7219ed6deff9d0b7e4e8918eea71c289ce912f0043fe18a39b2b80928a5083
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URL pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, appears to relate to citation formatting, suggesting a lure to disguise the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://gimoguvi.ru/strik?utm_term=citing+online+newspaper+articles+bluebook PDF link annotation
    • http://kugewezebuvigiw.mygamesonline.org/jomunajulu.pdfIn PDF document text
    • http://bibuzikufaje.mygamesonline.org/17654343204.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/gizonukorad/dell_e7450_price_in_bd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af3df34b-3851-40fc-bd65-1b78d1e8708f/93625156838.pdfIn PDF document text
    • https://s3.amazonaws.com/kagedatabujo/how_to_find_total_direct_materials_price_variance.pdfIn PDF document text
    • https://s3.amazonaws.com/tubupejevomo/jobagojiwod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/066bd991-ae75-4f38-ae4f-6f774369e093/89567046669.pdfIn PDF document text
    • https://s3.amazonaws.com/zafirawit/movipadawibudunexepazelu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39c65117-5759-4b94-bb7d-1c7120888c26/56585794252.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6df91a9-d6a5-4993-930e-465fa459bd95/vedufoji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac771e7f-346e-4cb5-9f1e-15d8d71e3074/bbt_bank_locations_nj.pdfIn PDF document text
    • https://s3.amazonaws.com/sonutopexaramuf/the_neverending_story_characters_pictures.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59262015-d93f-44d5-b9b7-d690ae7e01be/vepeg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69c51ed3-4df4-4805-9951-0b7cf506568b/26004108250.pdfIn PDF document text
    • https://s3.amazonaws.com/xeruxaxer/6668089290.pdfIn PDF document text
    • https://s3.amazonaws.com/tufitijinexu/easy_piano_chords_songs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/857d0a45-c3a0-4c03-9625-82c56e7cbdf4/how_to_value_a_used_car_in_canada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ef11685-5545-4124-b142-ba5179797d48/13248340700.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2424befe-8ab7-455f-8e75-be1f341def73/noxovenaruxulakaxa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52eb3e62-3af4-4a90-8dc6-d3643100bc0a/pioneer_gm_a5602.pdfIn PDF document text
    • https://s3.amazonaws.com/degisapemifa/tabexulubulaso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2ba0011-7935-4748-8526-374ba8dce382/logitech_z-2300_without_remote.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d87a720-bd64-4438-856f-5aafc4d0b641/zivomunerudazojonubu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001065b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1065B 5300 bytes
SHA-256: 9352514f82cc826e8d032a0d2f843ee4545c4e67c83418eaddf29796dc0ba7ba
font_01_sfnt_off00011887.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11887 11576 bytes
SHA-256: 8f8966eac22b14bac5a01a32b3cb257c2bde598f32b1cb22140616a7f1d26a7e
font_02_sfnt_off00013fe3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13FE3 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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