Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e17acc6da6a0c4e…

MALICIOUS

PDF

97.5 KB Created: 2020-10-31 03:51:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ec30f54ef49c775d8953de4101c797dc SHA-1: dae4fddf70277d9a3024ad5b4c7572a06a18faa7 SHA-256: 9e17acc6da6a0c4e8891d2d5312f0c1018113f75d10472093f2a803c338b90f8
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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 4

  • 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.
  • 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://gettraff.ru/strik?keyword=nc+juvenile+justice In PDF document text
    • https://xisubuto.weebly.com/uploads/1/3/1/3/131380177/3def0.pdfIn PDF document text
    • https://panidulupeju.weebly.com/uploads/1/3/0/9/130969186/merinorasaniv_nidikurawi_ketexirup.pdfIn PDF document text
    • https://lavigepes.weebly.com/uploads/1/3/4/4/134437347/a654c446b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/lixuzo/sudavatolarafotimufil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eef4169f-d777-4b19-8962-1fc4b17fd68d/welcome_letter_to_parents_from_teacher_distance_learning.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4b4d746-fb16-48af-8acb-2c8e9d78ac00/bibadirolujefapubo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/2027/7686/files/jisoverijezexulixiguno.pdfIn PDF document text
    • https://s3.amazonaws.com/kijelopazekune/60695112383.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ea2ac65-27bd-4c97-9cdf-bfb25a27b197/masubimilokamuxekep.pdfIn PDF document text
    • https://s3.amazonaws.com/wizedumi/tazaxaxisoze.pdfIn PDF document text
    • https://s3.amazonaws.com/gezetega/accounting_tools_for_business_decision_making.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/1843/4735/files/31825044675.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/rawutoji.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/dayton_battery_charger_manual.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_007_off00014537.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x14537 20948 bytes
SHA-256: 957792d9edd6ef71b03121741d9a1601297b0ada737f88c8f9853a1ca5ee07a9
font_00_sfnt_off00010fe3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FE3 4364 bytes
SHA-256: d1c662dac7455bf8ac16246105714194b493b85851bc5fb36bc748c0965fedf7
font_01_sfnt_off00011ed4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11ED4 11132 bytes
SHA-256: 3d151e31ead56c58c19263cf10e622b1f1ca40bcd791a49f4db98cba06ed8e7a
font_03_sfnt_off000168d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x168D7 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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