Malicious PDF — malware analysis report

Static analysis result for SHA-256 45bf4c6e7198d162…

MALICIOUS

PDF

77.5 KB Created: 2021-04-04 00:23:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 5db69623ff7bbeed7db1772a556a9fb2 SHA-1: 434851b4d118c74c2c496dd58f8ea3209506e724 SHA-256: 45bf4c6e7198d162da0dd6b06a1bc277fe68befc0eaf5eb82a9fa1bb240da3fd
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a URL that appears to be a lure for game hacks, suggesting a phishing or malware distribution attempt. The PDF also contains a large number of external links, characteristic of SEO spam or link farming, which can be used to obscure malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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 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://golowaki.ru/wix?keyword=zombs+royale+hacks+pc PDF link annotation
    • https://wagemerefav.weebly.com/uploads/1/3/2/7/132712282/bimizakefu-kefenolep-kamofofufup.pdfIn PDF document text
    • https://dumejolizaxoko.weebly.com/uploads/1/3/0/8/130814858/ffa19a0e11359e.pdfIn PDF document text
    • http://sepibuzare.22web.org/bedfordshire_police_report_a_crime.pdfIn PDF document text
    • https://ganepivojo.weebly.com/uploads/1/3/4/7/134774155/205985.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/wuxupewu/tcp_ip_protocol_driver_dependency_service.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b3194c7-4396-418f-a4ee-349933586c9e/is_dominos_gluten_free_pizza_low_carb.pdfIn PDF document text
    • https://s3.amazonaws.com/batiku/87293701769.pdfIn PDF document text
    • https://30c74dc1-c3f2-4e71-8253-1ec84f3b94e1.filesusr.com/ugd/b8c6fa_550a746c4bab435a90d1ba8fc97c13ae.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kokesatodixon/are_android_antivirus_apps_useful.pdfIn PDF document text
    • https://s3.amazonaws.com/bolovopizonuki/list_template_html_css.pdfIn PDF document text
    • https://s3.amazonaws.com/sabegokek/absorb_information_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/julexekubaj/cheat_sheet_isaac_rebirth.pdfIn PDF document text
    • https://s3.amazonaws.com/mubefula/60476905613.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ae222be-492f-4147-8f59-c6b890ad61b7/75160258843.pdfIn PDF document text
    • https://f0f855fd-29d2-4bf6-9fdd-af1de8d1f91d.filesusr.com/ugd/184831_1be1722ebafe415f9d50fa1a7c993b58.pdf?index=trueIn PDF document text
    • https://99b08629-27b2-41dd-83a1-938dc2ca35bd.filesusr.com/ugd/067ecb_95e0e16bf22644db828eaf849f2c7c36.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/dcd9242c-39d6-4198-95ac-b0b731ec5738/taco_bell_5_boxes_today.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/005b87fd-ace6-4310-a9c7-fec09aa349f1/analyzing_point_of_view.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/wafudenavusipozoziguzixow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd71d00b-82c3-4f32-88c6-6bafb86a97d6/35142213852.pdfIn PDF document text
    • https://s3.amazonaws.com/gapivegek/14401187658.pdfIn PDF document text
    • https://86a6be6f-1c3f-48a2-98e5-8a654ddc1212.filesusr.com/ugd/027f51_ab453ddc456240f6a4e2f15a742dfb88.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xulepiwa/neato_xv_21_repair.pdfIn PDF document text
    • http://baxivus.epizy.com/fevotodigewusudakike.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_off0000f09c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF09C 5436 bytes
SHA-256: 47d8e2c4d93add14d394fbd2dd6a2d51ae565b2869d37b6e527f295e52a101da
font_01_sfnt_off000102ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102EE 11060 bytes
SHA-256: f06f528cee1c45c78a332aeb75c65f2837fea7066e1cbd42a73f4ed4e4ba27ca

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