Malicious PDF — malware analysis report

Static analysis result for SHA-256 11dd508900a5c14f…

MALICIOUS

PDF

65.8 KB Created: 2021-01-08 08:44:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 5c8eb51cbf6f1374d00f42342f5b5896 SHA-1: c5d895c911c79d9845d139685e6118f41ca66f21 SHA-256: 11dd508900a5c14fa084541dd9e1e6b2cb1d1caf57f2d6df05f2eb1e3d3787d6
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The document contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The presence of PDF-specific heuristics further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafftec.ru/aws?utm_term=gnc+pro+performance+chewable+creatine+monohydrate PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4380539/normal_5f98326779841.pdfIn PDF document text
    • https://tijanowu.weebly.com/uploads/1/3/0/7/130739502/5418289.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/bigunurusipota_vovavubavuw_malolipesafa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369793/normal_5f910d3ca209a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/42dea3a2-597c-4753-aa38-48178cdbccb5/terusakegorexoji.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/wifi_ip_camera_elite_ptz_1080p_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/dupula/final_fantasy_xiv_culinarian_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/sabegokek/archeology_study_bible.pdfIn PDF document text
    • https://s3.amazonaws.com/xufaxoferugod/brandon_marshall_saints_uniform.pdfIn PDF document text
    • https://s3.amazonaws.com/waxapoz/21552363952.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9aff73f-bdb8-499a-9efd-29d7c7aae875/window_on_humanity_5th_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f35f4a38-3c1b-44d3-9e59-23cb708b8914/viponufigu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a29137ee-b180-4af0-8be7-7b20e55f0080/69221609310.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1113d56c-ffff-482d-8b9d-2c4251a4f05b/grow_cube_game_unblocked.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_off0000c27a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC27A 5584 bytes
SHA-256: b80522b9f7129cc585814405965570a0ee09e4a65cdb0f1d5214cde4bdbc5c25
font_01_sfnt_off0000d562.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD562 10700 bytes
SHA-256: 648064df7f6937afc09471582aa22ff216aad16ce492a82a7084cfe11bfeda9e

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