Malicious PDF — malware analysis report

Static analysis result for SHA-256 88361301e6afa1aa…

MALICIOUS

PDF

101.5 KB Created: 2021-05-24 20:04:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 2d60f014cb2c3a2f59769c7470759f20 SHA-1: 2e2722b77d9ca05b9c0125cab978d4b7ced8a10e SHA-256: 88361301e6afa1aa8212bf2382b2fcc0345058546e345d2d380d9da5cd63c38d
96 Risk Score

Malware Insights

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

The PDF file contains a lure related to diet plans, directing the user to a suspicious URL. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or to serve a secondary payload. No scripts were extracted, but the embedded URI is a primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://leonvi.ru/strik?utm_term=dietas+dr+bolio+gratis+cambio+de+metabolismo PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4495387/normal_6057b6978407c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417827/normal_6054016ad229c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389821/normal_602060cb29a73.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375209/normal_601d305ea275a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415935/normal_6030d6f048fb8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489975/normal_602e36783baa7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481663/normal_601b88a698e49.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496391/normal_5ff0bd2b84e74.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472783/normal_5fc673e4c4efb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460946/normal_6052fab1d6f4f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490140/normal_6052832675586.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406482/normal_5fcb54452c02b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469136/normal_5fc79944c0445.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402252/normal_605d80a502c95.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366036/normal_6033a8f401b57.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372354/normal_60291ef54fca4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477138/normal_6068cfbb1eeb8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493549/normal_60373c7ce190d.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/2880eee8-d989-473e-ab98-39a7a305241f/metric_pattern_cutting_for_menswear_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwimadaneb/tissot_chronograph_user_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5525754-eb1f-4afb-8a4c-b5b86b8efa33/harry_potter_world_hogwarts_castle_ride.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/how_to_write_a_good_food_review_examples.pdfIn PDF document text
    • https://s3.amazonaws.com/taguxif/1n5822_schottky_diode_datasheet.pdfIn PDF document text
    • https://s3.amazonaws.com/nawuvud/35345052636.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_off00014aca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14ACA 5396 bytes
SHA-256: 2e89f6673642fd04c32e479eb6aecc48ae3e3468de311ef01ca94727dae103ec
font_01_sfnt_off00015d14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15D14 12984 bytes
SHA-256: 1ac8be76bd2ccffd970ca592433e3d6862a3546184234c065f6c10bd490f7c00

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