Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b31b7d9a1a590a5…

MALICIOUS

PDF

948.3 KB Created: 2021-03-23 21:01:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 6fe2ddbe6e09ae6fa59114e82a1a7134 SHA-1: eb6b8e9558a9a136cd9dda13f4d669b9937c1ddb SHA-256: 0b31b7d9a1a590a54b18d50142be730e2260df9e05121afe67fed512039c32d2
66 Risk Score

Malware Insights

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

The file is a PDF document that contains embedded URLs, one of which is identified as a potential phishing lure. The ClamAV detection and the presence of multiple unknown reputation URLs suggest malicious intent. The document body, though heavily obfuscated, appears to be a deceptive lure related to car maintenance, likely intended to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4177

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://fokemale.ru/aws?utm_term=how+many+quarts+of+transmission+fluid+for+2014+honda+civic PDF link annotation
    • http://newsportstechnology.ru/how_to_convert_png_image_to_jpg_on_macfwmbz.pdfIn PDF document text
    • http://dithetsen.xyz/bepelopoxizilojisugofivihc4oo.pdfIn PDF document text
    • http://idealica-ufficialeitalia.website/boy_scouts_manual_2018ihqvj.pdfIn PDF document text
    • http://gezawazerige.iblogger.org/jemoxuwivikekuvej.pdfIn PDF document text
    • http://mobile-media.moscow/candy_crush_soda_hacked_version_free6ayii.pdfIn PDF document text
    • http://saudiautoinsurance.com/99946509829mms6r.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466154/normal_5fe3b4854a0bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421049/normal_604d80e488eea.pdfIn PDF document text
    • http://bossyonlinex.com/binary_number_system_freejwggu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368962/normal_600de3c714dca.pdfIn PDF document text
    • http://legendbilisim.com/dineina_y_kinesina6njux.pdfIn PDF document text
    • http://gazzsheff.xyz/udacity_capstone_project_androidyhfsc.pdfIn PDF document text
    • http://canonsburglake.com/zombie_original_versiondiios.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470412/normal_60298e84513b8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://3c3b6f52-20a2-448a-be11-eec5930c502f.filesusr.com/ugd/0ca786_865d7a52d5bc418287eaaf2a44a03c45.pdf?index=trueIn PDF document text
    • https://466f9527-ada3-48b4-ac0c-4ba5546996ca.filesusr.com/ugd/a4b6b9_7e8285c03e99414aa5b01eef1c6479c1.pdf?index=trueIn PDF document text
    • https://786c536d-253b-4a15-94df-129c4693a223.filesusr.com/ugd/1fc311_8d66024a886042988a32d0b24ae713cf.pdf?index=trueIn PDF document text
    • http://gesebokumu.epizy.com/walking_program_for_weight_loss.pdfIn PDF document text
    • http://pulawev.epizy.com/what_is_the_process_of_booking_in_jail.pdfIn PDF document text
    • https://s3.amazonaws.com/sasufufa/19239806042.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/web_services_testing_and_api_testing.pdfIn PDF document text
    • https://s3.amazonaws.com/towakog/lowixizavubivomafat.pdfIn PDF document text
    • https://601bead5-a720-4f65-98db-62fe2a42cb91.filesusr.com/ugd/0e52b4_c5d94fac301941adac10dbfeca12d079.pdf?index=trueIn PDF document text
    • http://pitefabe.epizy.com/cellink_neo_installation_manual.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_off000e7bd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7BD8 6016 bytes
SHA-256: 920a047a8fc0e110bfff1ec576564824855660d75882ab6c20590a860cdf2f00
font_01_sfnt_off000e904f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE904F 13504 bytes
SHA-256: 98ecb1f119bcf5408c772fd01ef6dcbdd02a125ba81ffe6e08c12615f6540ae0

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