Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2bd7d42ab1e5e5b…

MALICIOUS

PDF

82.6 KB Created: 2021-04-20 16:40:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 3dfdd3e0387b5c838aeeea5ae740ac72 SHA-1: dd1ca97bbd46e219d3cd5122ab1872d61868e88b SHA-256: e2bd7d42ab1e5e5bad6f34383388ed9b94564a3616ddf10a6b0c7ac3114beee0
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://nipisod.ru/strik?utm_term=jeep+wrangler+owners+manual+2020 PDF link annotation
    • http://cesaregaspari.com/camp_x-ray_film_online20kca.pdfIn PDF document text
    • http://curvepreloved.com/roninoraruftzn25.pdfIn PDF document text
    • http://help-lnstagram-verifycopyrgiht.com/war_horse_breeds_in_indiagifvk.pdfIn PDF document text
    • http://jobware.pro/8408689451i3h1q.pdfIn PDF document text
    • http://fonixeguga.mywebcommunity.org/10075724754.pdfIn PDF document text
    • http://autobuff.xyz/entrance_exam_for_grade_1_philippinesyglni.pdfIn PDF document text
    • http://itwow.info/jutavifetewefejapbldjd.pdfIn PDF document text
    • http://hookup154.site/7049938505334tj.pdfIn PDF document text
    • http://sis-paypal.com/un_monstruo_viene_a_verme_libro_resumen_por_captulosjdyze.pdfIn PDF document text
    • http://magazinrf.xyz/thank_god_it_was_just_a_dream_storydssts.pdfIn PDF document text
    • http://bupetud.xyz/615556850087qw62.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/samopakamefap/extreme_programming_pocket_guide.pdfIn PDF document text
    • https://99442e0c-e188-470f-b1e9-a2082f9e7f28.filesusr.com/ugd/2274a7_a72cf194a2cc484f84e1c9ebe59bf8b3.pdf?index=trueIn PDF document text
    • https://4c69d07c-928c-405f-a1ab-6436392658c4.filesusr.com/ugd/4c264d_87f4bc3b182748919983fcf62726ac96.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/verirejon/dudiwunabepas.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/dover.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/communications_plan_template.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/fifty_shades_of_grey_soundtrack_download.pdfIn PDF document text
    • https://s3.amazonaws.com/turip/jawono.pdfIn PDF document text
    • http://perexuwofogefo.onlinewebshop.net/sobajapimokide.pdfIn PDF document text
    • https://eed7fa7e-4f31-4ba6-8269-e73f07ac74c5.filesusr.com/ugd/93374d_cb9b0fffe1c04c39b2c7e1257776fcdb.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/personification_worksheets_for_grade_5.pdfIn PDF document text
    • https://s3.amazonaws.com/tezude/autumn_leaves_easy_piano_sheet_music.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000102cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102CF 5496 bytes
SHA-256: ff03282aa21d8566bc925f5c9062457b57bce3924d815312c30786286869979a
font_01_sfnt_off0001157d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1157D 11592 bytes
SHA-256: 51e11f6ea2054aeef48701cbac759c8925a453cf3bea6ea5cc88599846ddfbef

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