Malicious PDF — malware analysis report

Static analysis result for SHA-256 68fa173e77226d88…

MALICIOUS

PDF

209.5 KB Created: 2021-03-24 19:44:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 726b74325d34c1f7344ad59d90eb6f20 SHA-1: bfee80747325db41c3eb9aecb6e1a3ab0fe227af SHA-256: 68fa173e77226d882fd107aaa3858ce9d0e52218e4893154f1ba6309b736546c
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that points to a suspicious domain, identified by heuristics as potentially malicious and flagged by ClamAV as Pdf.Phishing.Trojan. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the presence of embedded URLs in a PDF is a common technique for phishing or directing users to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/wix?keyword=tlatilco+female+figurine+size
    • https://bopidojosonek.weebly.com/uploads/1/3/1/3/131384153/fowona-kuvuzo.pdf
    • https://cdn.sqhk.co/gigijuke/4jcgdib/chained_cars_2020_mod_apk.pdf
    • https://kuxapularutamux.weebly.com/uploads/1/3/5/9/135984678/vevek.pdf
    • https://cdn.sqhk.co/nokotadi/3J6DPws/baduxezavosiraxabipudel.pdf
    • https://zitozujenuzudip.weebly.com/uploads/1/3/4/0/134042901/a05b3b33.pdf
    • https://suvenalopevoku.weebly.com/uploads/1/3/4/5/134510495/61da1f9d6db527.pdf
    • https://rixodinek.weebly.com/uploads/1/3/5/3/135392020/4dbff05b4fff07.pdf
    • https://cdn.sqhk.co/forexidof/jihggB8/84724047285.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/77cc86a7-c25c-4f7e-80b3-10fb5093d68a/the_power_to_get_wealth_kjv.pdf
    • https://s3.amazonaws.com/zinudipir/54748876879.pdf
    • https://s3.amazonaws.com/gajakelegeza/90466551607.pdf
    • https://s3.amazonaws.com/donukadizolin/nurax.pdf
    • https://s3.amazonaws.com/dedinavesute/roland_octapad_spd-30_second_hand.pdf
    • https://s3.amazonaws.com/kovezodepugov/daily_sales_monitoring_sheet.pdf
    • https://uploads.strikinglycdn.com/files/43585a20-b449-4f13-8474-6b2102e7c791/how_to_win_the_lottery_uk_guaranteed.pdf
    • https://s3.amazonaws.com/xukirizugukugi/86121772033.pdf
    • https://s3.amazonaws.com/vaxebisapesi/26392812383.pdf
    • https://uploads.strikinglycdn.com/files/e4628f02-ec4e-4c18-aeef-e5d8cb7b0c5f/discovering_physical_geography_2nd_edition.pdf
    • https://uploads.strikinglycdn.com/files/804010a5-9ea5-4115-92e1-91b4f4a8946a/core_connections_algebra_1_answers.pdf
    • https://s3.amazonaws.com/juvosi/betheme_tutorial.pdf
    • https://s3.amazonaws.com/povelenavuviw/how_much_oil_does_a_vw_eos_take.pdf
    • https://uploads.strikinglycdn.com/files/8bdd1acb-220c-4c1e-bda8-f0f075da89af/what_is_the_biological_half_life_of_thc.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002fb4a.bin
6e2bae2aafdb87043b503fde659461ef914ed3e5c6e9200a834dad8985172c8f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2FB4A 5200 bytes
font_01_sfnt_off00030ced.bin
a57eeaf242ca58f4d4e959800e6bed9dcb301353044ded9ac8edfb5946a7fc2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x30CED 13672 bytes

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