Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec78f6d768f60df0…

MALICIOUS

PDF

118.1 KB Created: 2020-12-13 12:53:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 4d02b386856368bcf8b70caeaef6bb34 SHA-1: 1c6ac867f46eca6f91379875564ec12274987301 SHA-256: ec78f6d768f60df09bdb5fade27fbe5349911ecbf45d317119c7e0b1c7fdd1ef
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, likely serving as a lure for phishing or malware distribution. While no scripts were directly extracted, the PDF structure and embedded URI heuristic suggest an attempt to redirect the user to a malicious site, consistent with a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/123?utm_term=eastman+school+of+music+teaching+philosophy PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4402267/normal_5f9edc23db8a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370768/normal_5f91cdc5cb488.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/jazofi/yellow_make_snapchat_friends.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4385f1e4-4c64-4c88-8c81-4e6bd6343217/xigirew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a11d0098-e8c2-4a78-9ffd-f4c42d2e8ad0/period_repair_manual_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb2524e4-1021-462e-b57c-9e6425a01cd2/chac_mool_resumen_corto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19c19b8f-75a7-4691-a30e-716ed90e10dc/10884417004.pdfIn PDF document text
    • https://s3.amazonaws.com/luropi/doctor_s_appointment_card_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b79bdba-31e9-48d4-8357-d411b4a411ce/watch_rush_hour_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e15a42ab-7d9a-4414-ae35-b0a6e3bdbe7f/civilization_5_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/bisazabe/gironif.pdfIn PDF document text
    • https://s3.amazonaws.com/penefelomiju/itinerary_template_for_event.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_off00018464.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18464 5272 bytes
SHA-256: 2d0b3581adc484da93e0bfcff5a76bfb6566545e776619b582cca1eb332a7418
font_01_sfnt_off00019638.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19638 11324 bytes
SHA-256: 40dbf19c82c8c2bfcfee3be46e368e4bc09f781a5b3fa8386a37fcc3bce0a96d
font_02_sfnt_off0001bcc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BCC2 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

Open this report in the interactive analyzer, or submit your own file for analysis.