Malicious PDF — malware analysis report

Static analysis result for SHA-256 29090fb1cffda5d0…

MALICIOUS

PDF

72.4 KB Created: 2021-02-15 00:43:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 73ee55ed8a1c35409699470fcc8b6db5 SHA-1: 57042a61cf4db30cfb415217b66e024fb395e3d1 SHA-256: 29090fb1cffda5d089c4749553b563b407c68827a660124f70eb936bd581bf99
96 Risk Score

Malware Insights

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

The file is identified as malicious by a ClamAV signature and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF format can embed JavaScript, which is often used to redirect users to malicious sites or exploit vulnerabilities.

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=asturias+isaac+albeniz+andres+segovia+pdf PDF link annotation
    • http://newberginvestmentproperty.com/band_of_brothers_book_stephen_ambroseinfv4.pdfIn PDF document text
    • https://cdn.sqhk.co/pijovowifil/Khjgiwc/audio_pro_addon_t10_review.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390371/normal_5fd78c6bf0416.pdfIn PDF document text
    • http://carbags.site/74972607387hvd3g.pdfIn PDF document text
    • https://cdn.sqhk.co/kezagajasiw/giihsgc/bomberman_adventure_gba_rom.pdfIn PDF document text
    • https://cdn.sqhk.co/sobexofap/ogfggia/new_bottle_flip_3d_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/zatejurix/RjaCRja/renaissance_style_definition.pdfIn PDF document text
    • https://cdn.sqhk.co/rapawaferew/8iidelX/served_meaning_in_marathi.pdfIn PDF document text
    • https://cdn.sqhk.co/jozazixefuf/7esiaRH/messenger_marketing_2020.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498992/normal_5fc7c931c2014.pdfIn PDF document text
    • https://cdn.sqhk.co/teposodigar/g5gfeXB/warcraft_gameplay_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/tobajizil/AhhjbOE/download_map_of_toronto_neighborhoods.pdfIn PDF document text
    • https://cdn.sqhk.co/tivuzofep/LRgdigA/wejudemaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420449/normal_6019db4f389ad.pdfIn PDF document text
    • https://cdn.sqhk.co/bulixanejad/kKgd22q/lasership_tampa_reviews.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
    • https://s3.amazonaws.com/dopugaxelelema/papegepitametufaxitelu.pdfIn PDF document text
    • https://s3.amazonaws.com/remufuzu/lewot.pdfIn PDF document text
    • https://s3.amazonaws.com/xabalaru/free_browsec_for_opera.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_off0000cc3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC3D 5444 bytes
SHA-256: 4d6ed58d348ce23b79b5168fb859e434d411a2a2c481316dfc90547f1e2c7d08
font_01_sfnt_off0000ded5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDED5 11200 bytes
SHA-256: d6f3902bf7c37d7dcb5a360ef8b0dcc80220706b88ca74d45403ec8991213fa0
font_02_sfnt_off000103eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103EB 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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