Malicious PDF — malware analysis report

Static analysis result for SHA-256 6535d43687d28e32…

MALICIOUS

PDF

146.3 KB Created: 2021-02-15 10:43:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 78883896e69c33e66a9c2160db2b6a08 SHA-1: 34308da6291e8015f8cd31a886b998bf47e57cee SHA-256: 6535d43687d28e32c800824d9164236ca7faeb5217716a9148040b628172c32a
96 Risk Score

Malware Insights

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

The file is identified as malicious by a ClamAV detection and an ML classifier, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'bologen.ru' suggests a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and the ML detection suggest it may contain embedded JavaScript or exploit code to redirect the user to the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://bologen.ru/wix?keyword=radical+acceptance+pdf+tara+brach PDF link annotation
    • https://cdn.sqhk.co/vanewano/hijhggl/kid_city_gaming_madden_nfl_20.pdfIn PDF document text
    • https://cdn.sqhk.co/lerapuraroke/HfhgQjh/flickr_photos_not_downloading.pdfIn PDF document text
    • https://cdn.sqhk.co/fasotaluvose/eXhhejg/94558249589.pdfIn PDF document text
    • https://cdn.sqhk.co/fujonexa/eggbzUE/leremevesevimagexok.pdfIn PDF document text
    • https://cdn.sqhk.co/daxozazon/ihq2jah/happy_wheels_unblocked_at_school_hacked.pdfIn PDF document text
    • https://cdn.sqhk.co/jogepirar/ihjdhfC/fakugewufazemikopa.pdfIn PDF document text
    • https://cdn.sqhk.co/rifelefiw/iGPiBhd/vevizipixasanutixowigita.pdfIn PDF document text
    • https://cdn.sqhk.co/vilonunufuk/dja640w/used_drum_sets_for_sale_in_my_area.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/purawuma/clothes_and_colour_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/davawina/my_talking_angela_games_apk_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zoromexemuzid/75767196619.pdfIn PDF document text
    • https://s3.amazonaws.com/jobavo/angkor_wat_tour_guide_cost_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/marimejerebo/85964847011.pdfIn PDF document text
    • https://s3.amazonaws.com/libeganot/61738492130.pdfIn PDF document text
    • https://s3.amazonaws.com/bejideba/mimo_beamforming.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/rscit_answer_key_2019_set_b.pdfIn PDF document text
    • https://s3.amazonaws.com/fivebo/dulce_et_decorum_est_study_guide.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_off0001f43c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F43C 3424 bytes
SHA-256: 3eeeb262efe2db6ac019e4a46717f7eb4b3adc08de890b9a43a69c251d8d8157
font_01_sfnt_off00020050.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20050 5212 bytes
SHA-256: d80ef8f734c0299d46c44b3719564472f08150dcf723b438825b4a7552625423
font_02_sfnt_off00021205.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21205 12876 bytes
SHA-256: 87551d92703e98312afdbffcc59eb13973018815e660e3dcc116297e172775b2

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