Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f5a97ad39e20f5d…

MALICIOUS

PDF

81.8 KB Created: 2021-02-25 22:18:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: f481bf352e643d07b145b18f8c09b7fb SHA-1: 7a693d477c27c6aca2ebb2e14101c3b6e5567e6a SHA-256: 9f5a97ad39e20f5dbf995cebcc709f335dbb95332a17cf62a3f5b8a5afd78458
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, which identified it as a phishing trojan. The document body, though heavily obfuscated, contains references to a "Kitchenaid ksm90 owners manual" and an external URI, suggesting a social engineering lure to trick users into downloading a malicious payload. The presence of an external URI points towards a potential download or redirection mechanism.

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://leonvi.ru/aws?utm_term=kitchenaid+ksm90+owners+manual PDF link annotation
    • https://cdn.sqhk.co/fuvazuginu/Yhhgdw3/hooked_chat_stories_mod_apk_unlimited_hoots.pdfIn PDF document text
    • https://cdn.sqhk.co/lixipadiwel/jevihay/paper_and_leaf_website.pdfIn PDF document text
    • http://xitaboketeloba.iblogger.org/30180608160.pdfIn PDF document text
    • https://cdn.sqhk.co/pomisiforuko/gfQijDr/bosogijijunalikaki.pdfIn PDF document text
    • http://xuzerujagojagip.scienceontheweb.net/somewhere_over_the_rainbow_ukulele_chords_strumming_pattern.pdfIn PDF document text
    • https://cdn.sqhk.co/noxisoture/jhuhhge/celebrity_pop_quiz_game.pdfIn PDF document text
    • http://komaxinatobofe.medianewsonline.com/mefojulavatobiroseri.pdfIn PDF document text
    • http://dosijefa.mypressonline.com/jovet.pdfIn PDF document text
    • https://cdn.sqhk.co/desogepupema/1ugiiio/frequency_sound_generator_app.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://vazefetapo.rf.gd/orange_financial_report_2019.pdfIn PDF document text
    • http://xomemajerezazaz.rf.gd/tejumejizera.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubifirigevi/kadamban_tamil_full_movie_in_tamilrockers.pdfIn PDF document text
    • https://s3.amazonaws.com/nemafu/pevujezumo.pdfIn PDF document text
    • https://s3.amazonaws.com/lijulijowivaze/pork_chop_and_asparagus_sheet_pan.pdfIn PDF document text
    • http://basefub.epizy.com/beparoluxi.pdfIn PDF document text
    • https://s3.amazonaws.com/memexelu/7386787700.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/jomejiwurisisa.pdfIn PDF document text
    • https://s3.amazonaws.com/galinikagopit/90652979358.pdfIn PDF document text
    • https://s3.amazonaws.com/sedowedi/28383764628.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f4e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4E4 5484 bytes
SHA-256: 63cc32365c2d537a5ce78c31359a3c74a116f470df5550bef123be188e1eb80b
font_01_sfnt_off00010756.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10756 10780 bytes
SHA-256: 20291b73062bf09bb1158efddfcc551cb36f07c2c2dcd20f6e104f30f0bd17be
font_02_sfnt_off00012bd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BD5 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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