Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8106d45cb92da6d…

MALICIOUS

PDF

69.3 KB Created: 2021-05-31 14:00:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: a433a4931c2ad85086be3010bc315335 SHA-1: 56ee3a1ad6735daee95d1b78128dfd04432599ab SHA-256: a8106d45cb92da6da3c63a11a9d3453f791a4f0d3c9212808bad1af45e8537f7
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains an embedded URL that leads to a suspicious domain, likely for phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to 'Propaganda newsela answers', indicating a phishing attempt to trick users into clicking the malicious link.

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://lozipotod.ru/123?utm_term=propaganda+newsela+answers PDF link annotation
    • https://static.s123-cdn-static-d.com/uploads/4447265/normal_60b4166ed0bb7.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4476582/normal_60b40c38341a4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427295/normal_5fdda1a97861b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476578/normal_605f5868c3bf4.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/996aa505-31f1-4295-930d-4d6374331f80/the_selection_kiera_cass_wikia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb79143d-5e24-4dce-93fc-4b8433eacd71/rerum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d67e4a3-2dce-4403-9f24-cec19dc91272/dyson_dc50_stopped_working.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cc6892d-9ac6-4222-a7c5-863285c4080a/kabeko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ce7ea23-4c6d-471f-a478-d104ef90f248/how_to_turn_on_a_t-fal_deep_fryer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90b857ca-dcb9-4537-b588-403e48efabe9/rofidaforatomudokapax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14082699-d370-4bd1-af0a-492a68aa6fe2/sivize.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd04f547-fe18-43d5-83d0-71c9d5a75108/how_to_connect_asus_rt-n12_router.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1d03755-9171-4856-9d90-352a6999e161/pebaseruvemojene.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53b90603-5169-4632-922c-5812cb8c6a8a/kublai_khan_southaven_ms_coupons.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ea5510d-7d32-4c99-8164-c7d17948c3ff/90647269265.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9353ca67-8946-4443-b013-ce9b7ae3b77f/calculo_de_volumen_con_integrales_triples_ejercicios_resueltos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2aad1c1-5538-4103-94ad-4e4979fa8088/7_principles_of_systems_theory.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06185fb9-cf3a-4628-b80a-9d9a7c7373ee/lelipakonizebo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81d80c96-3463-4c67-9468-962c8e5015c3/xiwipobaravejazet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf10388a-3e2e-46c8-8563-92c92a80ab76/how_to_fix_f5_error_on_maytag_washer.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_off0000d3ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3EA 5220 bytes
SHA-256: eb636bd3891d603fad1f8ce08ead0692f0809406fcc7f660ae90e13a1ae72d92
font_01_sfnt_off0000e5cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5CD 9820 bytes
SHA-256: 19a11027a5535800d7dc104ed8c947876d1e129f2c32cf9783d4aa777dce757a