Malicious PDF — malware analysis report

Static analysis result for SHA-256 bea8ab379f75ce8a…

MALICIOUS

PDF

99.3 KB Created: 2021-05-21 17:04:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 56395024bab2f9914084e081cf008e92 SHA-1: b163741b03a6347f1a065ae153f3b6ebcb1a25f4 SHA-256: bea8ab379f75ce8aeac6908f1061dc1bde2326ef46ba5bfe316450278f6522c8
156 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9995

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://dafemum.ru/strik?utm_term=download+dbz+budokai+tenkaichi+3+mod+iso PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4378155/normal_604e26da26569.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482190/normal_5ffc57cf83ee5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412591/normal_60662595f2c16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481278/normal_601595d62493c.pdfIn PDF document text
    • https://ronupajowosoza.weebly.com/uploads/1/3/4/8/134871490/fuwedagumabedur_nelisosikasuno_sizekajeta_dewitiribaze.pdfIn PDF document text
    • https://gaditefu.weebly.com/uploads/1/3/2/7/132712385/1609172.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502870/normal_5fd27a40b311f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500893/normal_600f3c2c4b675.pdfIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wuniku/causes_of_counterproductive_work_behavior.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9ff3de4-c3d4-444a-986c-8540ef3d6711/vupasiwuditin.pdfIn PDF document text
    • https://s3.amazonaws.com/dowadotiju/ativador_office_2010_kmspico.pdfIn PDF document text
    • https://s3.amazonaws.com/satuja/33210588463.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/fosinefekovosajax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/adc7304a-3086-4a11-9d5a-32c744ccd389/38994934707.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34a8cb77-c992-4369-9eaa-034a1f53b1d5/is_gdp_a_good_measure_of_economic_well_being_quizlet.pdfIn PDF document text
    • https://s3.amazonaws.com/nezanurugega/durable_financial_power_of_attorney_form_az.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/jonutunizelabikisurad.pdfIn PDF document text
    • https://s3.amazonaws.com/gimufesajo/taco_bell_chicken_taco_salad_no_shell_calories.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1650e50-977a-42ed-be6d-39698d556154/walmart_pharmacy_near_me_open_24_hours.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://www.gnu.org/licenses/gpl.htmlIn 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00013cb2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x13CB2 8436 bytes
SHA-256: 45316c68429d95c73f023e7ef84e63644e0a3fb5d0ae5d1522e15e7caf899f52
font_00_sfnt_off00010dbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DBF 8364 bytes
SHA-256: 023c2cc1c6ed3ee9f4c417a9cd976be5688e5173ed5e099861527c2dfe7a7294
font_01_sfnt_off000129bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129BC 5592 bytes
SHA-256: 4eeab4f7b91a54c5de50a97f86897b135eed62b54452797f3248b93673276274
font_03_sfnt_off000153c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x153C7 13276 bytes
SHA-256: c5f3fbc285f3445e719be33c65ba18d11fb3aded3eabd2017ea4109060d5d04f

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