Malicious PDF — malware analysis report

Static analysis result for SHA-256 48f2b6aa053d2f7e…

MALICIOUS

PDF

72.3 KB Created: 2021-04-07 10:38:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: b1716e63aefcff9f8ca14e147a97e363 SHA-1: 6f8ed321c6d65a7268792b8c3434c550b51447c6 SHA-256: 48f2b6aa053d2f7ebe46a256f29f50d2b746d55f98a5293fe6a016dfed2d617e
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URL pointing to a suspicious domain, likely intended to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to 'European imperialism in Africa dbq', indicating a targeted phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://soxebez.ru/wix?keyword=european+imperialism+in+africa+dbq PDF link annotation
    • http://marafonsport.site/71520328125eoonu.pdfIn PDF document text
    • http://originalhallyu.com/play_free_fun_brain_games_online11186.pdfIn PDF document text
    • https://cdn.sqhk.co/tovipovo/atgej22/personal_pronouns_in_spanish_worksheet.pdfIn PDF document text
    • http://paypallsecurity.com/sigaxalulevewanule1uh0a.pdfIn PDF document text
    • http://jedusajinud.mygamesonline.org/boeing_737_technical_specifications.pdfIn PDF document text
    • http://wirobigi.medianewsonline.com/zanonekagurevenofi.pdfIn PDF document text
    • https://cdn.sqhk.co/jasurisunav/smjcNNN/switch_using_scanner_in_java.pdfIn PDF document text
    • http://dalnoboyi.xyz/54525116942jkbxt.pdfIn PDF document text
    • http://wiregabjuk.fun/327563069146r3sx.pdfIn PDF document text
    • https://cdn.sqhk.co/timafewa/nhisEhe/bejeweled_2_full_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/remozemot/KgipUgi/mortal_kombat_11_rambo_gameplay.pdfIn PDF document text
    • https://cdn.sqhk.co/kivipemo/Dvidgjl/android_nougat_32_bit.pdfIn PDF document text
    • http://beririka.scienceontheweb.net/learn_basic_c_programming_language.pdfIn PDF document text
    • http://lazirog.mywebcommunity.org/what_is_the_most_energy_efficient_infrared_heater.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/pajukovuxetu/zedoxijapokefumo.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/answering_machine_for_landline_phones.pdfIn PDF document text
    • https://s3.amazonaws.com/jojitagifuva/free_template_flyer_publisher.pdfIn PDF document text
    • http://duxegejuw.atwebpages.com/assamese_alphabet_download.pdfIn PDF document text
    • https://s3.amazonaws.com/saxefi/419774795.pdfIn PDF document text
    • https://s3.amazonaws.com/gedimuta/26312149842.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_off0000dd88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD88 5524 bytes
SHA-256: 2fb4b4bba18836c4bbdc6ebe2eebd0b2b1a189b3cf6f9e6982aabd89adc83da2
font_01_sfnt_off0000f032.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF032 10512 bytes
SHA-256: 0e71ce6892e1adb71af7445b8f5bbb3a619e3790fc76253399b3356b8c4b9b32

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