Malicious PDF — malware analysis report

Static analysis result for SHA-256 6938c50612abc0de…

MALICIOUS

PDF

72.9 KB Created: 2021-05-12 11:00:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 8127f30f66970c6b09797ef9c3d9a50d SHA-1: 1fb3be9fef948f1b8bccd303fc6a5ca25a707c34 SHA-256: 6938c50612abc0de52e118b6663b350d5c804485c980e19b12e3f84af7fbfeb0
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains multiple embedded URLs, with a high concentration of links on disposable hosting, suggesting a link farm for redirection. The document body, though heavily obfuscated, contains text related to 'Joyce Meyer power thoughts', likely a lure to disguise the malicious intent. The presence of external URIs and the overall structure point towards an attempt to redirect users to malicious sites for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://vilenefex.ru/strik?utm_term=joyce+meyer+power+thoughts+12+strategies+to+win+the+battle+of+the+mind PDF link annotation
    • http://ledy66.net/livros_de_histria_do_brasil_downloadlpjxf.pdfIn PDF document text
    • http://about-igsupport.com/books_like_midnight_sunjiy7o.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408170/normal_5fe0b6e3d5a68.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365576/normal_5ff933f6c4e12.pdfIn PDF document text
    • http://finofubamu.mygamesonline.org/book_to_learn_english_speaking.pdfIn PDF document text
    • http://tipopajokoti.iblogger.org/behringer_u-_phoria_umc202hd_driver_windows_10.pdfIn PDF document text
    • http://nozudozaki.22web.org/gegedinixifajukobirupoj.pdfIn PDF document text
    • http://uptodate.site/how_to_check_transmission_fluid_on_2004_dodge_dakotakarsx.pdfIn PDF document text
    • http://about-fb-support.com/rsos_form_admit_cardb2tu1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462096/normal_6038c27f2fae7.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/megodipewukitoj/group_discussion_report.pdfIn PDF document text
    • https://0306adf0-382e-42f1-903d-71c3961c97f1.filesusr.com/ugd/7ff653_3bbd9662058343a0add6fa594691a4b4.pdf?index=trueIn PDF document text
    • https://e29f0852-aa8c-4fc4-a5db-fcd144ab7086.filesusr.com/ugd/b730be_451c575fcd784049b3087f2a5ca73914.pdf?index=trueIn PDF document text
    • https://98771922-91e4-4673-aa0d-7794f4435593.filesusr.com/ugd/b6aaa0_6381fff9c93e47d6a8ed83e386189d11.pdf?index=trueIn PDF document text
    • https://79e8b926-cc52-4cef-90ae-68e3990d752e.filesusr.com/ugd/694d5d_26a6f80401c54404bec34788934f1a6c.pdf?index=trueIn PDF document text
    • http://roporuti.onlinewebshop.net/ryobi_backpack_blower_760_cfm_manual.pdfIn PDF document text
    • http://witimalolikoji.rf.gd/5106695300.pdfIn PDF document text
    • https://69868269-04aa-4a0d-8379-1371762fd556.filesusr.com/ugd/d8beff_9c6ace39477742efaeef494e4fd72551.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nuvukivaxiren/34661974741.pdfIn PDF document text
    • http://zesojowikodojaw.rf.gd/26629149874.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_off0000dc90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC90 6076 bytes
SHA-256: a66732f2f86d5b2d795aa09fc319099a40ba25e83a013835d8464ec4ab586a67
font_01_sfnt_off0000f12a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF12A 10632 bytes
SHA-256: f04ada2c070d3173edd7bc0ae0b569b1fc45625b27bf18ccb28f434fc1ccfccc

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