Malicious PDF — malware analysis report

Static analysis result for SHA-256 63018572f55f8f50…

MALICIOUS

PDF

72.1 KB Created: 2021-03-05 10:40:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 0ed0dae1a713acec4c527a19c1559a09 SHA-1: 8d2987ea8dcc1c783ec2f93155f47d81963abaca SHA-256: 63018572f55f8f5067a28de75c4db1897dca9097639cc72ed9cb650d6ac5ff54
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/award?keyword=what+is+the+us+constitution+for PDF link annotation
    • https://monowulesamewul.weebly.com/uploads/1/3/2/6/132682048/4d6f9da648d95.pdfIn PDF document text
    • https://cdn.sqhk.co/sosexazefip/i1ieCqU/zalajujebulimeturino.pdfIn PDF document text
    • http://zevixoleg.iblogger.org/rekikiw.pdfIn PDF document text
    • https://waxebusesu.weebly.com/uploads/1/3/4/7/134770319/6918427.pdfIn PDF document text
    • https://cdn.sqhk.co/texonatuzi/gfSghih/19460239141.pdfIn PDF document text
    • https://cdn.sqhk.co/zivudasexoni/SidIbHx/70040833390.pdfIn PDF document text
    • http://xoziduso.mypressonline.com/92321605273.pdfIn PDF document text
    • https://cdn.sqhk.co/dovinokobez/hggedjg/88118375811.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jirabasojexosud.atwebpages.com/how_to_get_free_redeem_code_for_free_fire_2021.pdfIn PDF document text
    • https://443275ec-395d-4f86-84c9-2ed7a250e117.filesusr.com/ugd/7d471d_50478ee7a0544ce383170e021afce019.pdf?index=trueIn PDF document text
    • https://780c8f77-0f51-49ab-8dd1-60a90eb210a4.filesusr.com/ugd/1b8612_3d600c9cef28484a90698a69f1a6836e.pdf?index=trueIn PDF document text
    • https://73e25548-3913-4bbb-aa69-a1b25f69568d.filesusr.com/ugd/cece23_cc9201ea94a74bf3b82d857f455087b5.pdf?index=trueIn PDF document text
    • http://sedobuxekazadi.rf.gd/ruwekuxabinojipor.pdfIn PDF document text
    • http://bozisiruvaletun.rf.gd/82704056199.pdfIn PDF document text
    • http://wenares.myartsonline.com/14063982117.pdfIn PDF document text
    • https://bef89f6e-6323-4b84-ad9d-a44490bfcc4f.filesusr.com/ugd/96768c_e94a3c70b5ff45849dc00973733b812c.pdf?index=trueIn PDF document text
    • https://b86313a8-447b-404d-ae6d-bc69740d899e.filesusr.com/ugd/e54fc7_39364961b7b247409e317387103427b0.pdf?index=trueIn PDF document text
    • https://95049c82-e412-4913-a0b0-e03e83d5170a.filesusr.com/ugd/127d6e_3ceab45dbd5943118525cf260787e46c.pdf?index=trueIn PDF document text
    • https://e7ba4f66-d023-404d-a355-a5b98970f127.filesusr.com/ugd/cac9e4_eae3515bb3f44e81b27a315f59fb33b9.pdf?index=trueIn 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_off0000e068.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE068 4952 bytes
SHA-256: 881bd7f6283861554887a5a5acc4706d07e060b208d85d88b36a09d286d99cc9
font_01_sfnt_off0000f148.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF148 10000 bytes
SHA-256: 692d950766b765a4fcae897e2209fb8aecc6fe17223f9dc2cd7fc85b0ff0e010

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