Malicious PDF — malware analysis report

Static analysis result for SHA-256 92012d0d156be8a8…

MALICIOUS

PDF

42.7 KB Created: 2020-10-27 03:46:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 7e9ac7fe3ee341dc7b314881b6852a6b SHA-1: dfa8b87960d3a05702869b9211cc0c7add9e467b SHA-256: 92012d0d156be8a8cf18429358dc510a9566fc5c6b5658a5d5f6fe3dcd7e7ead
194 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 an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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://ttraff.me/123?keyword=ticket+resale+websites+best In PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/5d6eb7.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/wozumadaku-mukevewurovebu-nefebo.pdfIn PDF document text
    • https://bafovulik.weebly.com/uploads/1/3/1/0/131070506/lajoko.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375541/normal_5f947a74b966f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375204/normal_5f8a5e9413555.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366625/normal_5f8f13533f06d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386837/normal_5f92069467026.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/leguvefu/45052320780.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/chemistry_periodic_table_of_elements_with_names.pdfIn PDF document text
    • https://s3.amazonaws.com/jofunozuzof/kasabemarigawupaw.pdfIn PDF document text
    • https://s3.amazonaws.com/sepawi/pdf_annotator_with_crack.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/hairy_maclary_story.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/carrie_fisher_wishful_drinking.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/consumer_buyer_behaviour.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/68236697600.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae074c47-98e2-43f2-8328-6798b25fa7fa/52985989633.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80041bbf-ee70-416a-b0e4-697d2aca8003/flip_the_script_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62a52773-3e2d-4202-9f7c-dadbc178f233/30211173322.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/edc46613-ba04-426e-bf76-6fa3220f7f22/18534390049.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a0793e5-167c-45bc-b730-4384beab26d2/28937427720.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9737/5388/files/perimeter_composite_shapes_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9536/2209/files/mewefa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5244/9435/files/kasam_tere_pyaar_ki_episode_15.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9477/9051/files/cell_organelles_labeling_worksheet.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_off00006864.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6864 5040 bytes
SHA-256: 35e501ca2d88abc94286427b730cd69d74ba059628ead3ea10571c2e7fa0b24a
font_01_sfnt_off000079a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79A7 10692 bytes
SHA-256: 5146667a40ec36817b07b2d2e5bf66b6d8738d6ea4bf7f60d61546cc79a46014

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