Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbb20cd9f7ba37e9…

MALICIOUS

PDF

73.2 KB Created: 2020-12-16 14:49:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: ad4fcad2a0c2cad03f29e04e13844bac SHA-1: 935590c86807bbc6a68f580f0d9955dfdf63b4dd SHA-256: fbb20cd9f7ba37e9178e86a2e76167fba90c4d47fc1fd8a97f4ed7b4cbb4df8c
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though heavily obfuscated, contains references to 'Minecraft gulliver mod 1.15.2', suggesting a lure to download or access malicious content related to the game.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffnew.ru/123?utm_term=minecraft+gulliver+mod+1.15.2 PDF link annotation
    • https://siminanora.weebly.com/uploads/1/3/4/6/134611077/169a7a24e9e.pdfIn PDF document text
    • https://wavuvavezexa.weebly.com/uploads/1/3/0/7/130775629/silon.pdfIn PDF document text
    • https://sezemizom.weebly.com/uploads/1/3/4/6/134622585/8462124.pdfIn PDF document text
    • https://kololopobiro.weebly.com/uploads/1/3/4/8/134853362/fifef-peligaropud.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/tuxenipup/kunukufuforo.pdfIn PDF document text
    • https://s3.amazonaws.com/kozewuposoridil/elk_guided_hunts_montana.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5b069403f5353fdb64a54/t/5fc8f08ae75eec1f920c6314/1607004299196/angelus_flat_black_paint_near_me.pdfIn PDF document text
    • https://s3.amazonaws.com/wazotojemov/dogfight_the_great_war_unblocked.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aeb9d02f-6b8c-42d8-9e09-0d81ac71a9fd/lixil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b39419f0-1ec0-42d6-b9b6-95efdcf573f3/definition_of_controlling_variable.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5a090405d5340f349e1df/t/5fc9863d6a94db17e4877add/1607042621997/24836587701.pdfIn PDF document text
    • https://s3.amazonaws.com/farezelof/duck_ringtones_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6350140d-93a6-434b-ae1b-d79eb2b76aaf/gladstone_high_school.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/chapter_19_ap_bio_reading_guide_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13d7faa8-b4c4-4c2b-b454-fcaba4ae8a08/20063842614.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB5C 5568 bytes
SHA-256: d3db2e9ebadba18ac7c5151bc76a60b6b7101ecb3ed08d6140bb6bf7fd6d60e1
font_01_sfnt_off0000de64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE64 10676 bytes
SHA-256: 89c9158a40d79f431e8c290ede72021dabf48866c79a2b807c6b94fe219d1428
font_02_sfnt_off00010302.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10302 16064 bytes
SHA-256: f7fb55aa7df24da556f1e6a14ff3e973b5c7274e6851c040e899454d18355684

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