Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed7e6e3c4f8493aa…

MALICIOUS

PDF

61.1 KB Created: 2020-11-25 21:16:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 9e9ee49ce86ef01372f643cd349fa030 SHA-1: 1be965543d16c232150a34fa80c55818ac5d4edf SHA-256: ed7e6e3c4f8493aa654d8c5132480b8408e84f0c313fd726900b6de7dcec7da9
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, and contains an embedded URI pointing to a suspicious domain. The document body, though heavily obfuscated, contains text that appears to be a lure. The presence of an external URI suggests an attempt to redirect the user to a malicious site, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://trafffe.ru/aws?utm_term=shawty+like+a+melody+ringtone PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413231/normal_5f95c2a4e675f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427284/normal_5f984eeb59375.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/wiwuxot/55838423045.pdfIn PDF document text
    • https://s3.amazonaws.com/dazemi/deturizosovatekawotujev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13a76f94-c257-4115-8ae2-6825e809dd9b/cyrell_paule_smoking.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53575054-d750-4f0f-b600-2b5e01afad2a/nofazamivixojupax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16a82f9c-bae4-4b11-a6e7-e82eef0bb421/11905940784.pdfIn PDF document text
    • https://s3.amazonaws.com/tuletivotarupu/31827327483.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/chakram_audio_songs_naa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04d1529d-7b28-4245-9c46-22205aa1caef/30011449729.pdfIn PDF document text
    • https://s3.amazonaws.com/lomogas/threat_awareness_reporting_program.pdfIn PDF document text
    • https://s3.amazonaws.com/muvunekagok/old_connecticut_path_history.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/677a8c72-434a-4aa7-a8ff-bee1a4ecd7b8/pastoralism_definition_geography.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02971e21-ac50-47ec-af4e-0007ffa02785/difference_between_atoms_and_molecules_in_tabular_form.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_off0000b279.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB279 5424 bytes
SHA-256: d40940d012ea096dc6277f3712451d4b9a701aae1f8ee1ef554f6a4efc479fa3
font_01_sfnt_off0000c4d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4D3 10044 bytes
SHA-256: 2da43d97d440d7945fc5103621711407b2278d1f9c3f9f2b43e63feb467a4ebc

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