Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0b937bac00f8b78…

MALICIOUS

PDF

51.6 KB Created: 2020-11-07 22:41:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 86abc1d5d5d5c1edf702b734b7dbed00 SHA-1: 989930bf8f15f6f68721849bec824d4a5b0cedd8 SHA-256: e0b937bac00f8b789ca592105949a2999422675d98b7a4cb20e05b0bcc66962c
94 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 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 3

  • 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.
  • 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/123?keyword=briggs+and+stratton+owners+manual+5hp+engine In PDF document text
    • https://cdn-cms.f-static.net/uploads/4411935/normal_5f946a68959a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446161/normal_5fa27c85384fc.pdfIn PDF document text
    • https://wepugimi.weebly.com/uploads/1/3/1/0/131070973/biride.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366662/normal_5f873449cafaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459062/normal_5fa368d7c6786.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://wakijixebe.files.wordpress.com/2020/11/aha_bls_test_version_a_2020.pdfIn PDF document text
    • https://fidunonip.files.wordpress.com/2020/11/madelizopididam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51f4dbc2-feed-4a9e-bea6-c659b9f6fb76/robert_clark_wesley_college.pdfIn PDF document text
    • https://nixeporebumo.files.wordpress.com/2020/11/trading_psychology_2._0.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23873644-9d9c-4290-b882-f550756ac50f/41371782874.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b7e340f-df36-4893-88dd-85c4ce91fa94/emoji_for_star_wars.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3fd9960-e192-459d-a94f-fe17f4c498ec/lixigopera.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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
font_00_sfnt_off00006118.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6118 5520 bytes
SHA-256: 12676f41cdb886ad1daaee43a2d20c638e493ffa94bf1d71a0a03202264249bf
font_01_sfnt_off000073b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73B9 11380 bytes
SHA-256: b43edc5925a9f0b1b3ec6f078395762731f0f63a59e3bccd87e747714a2aa5c2
font_02_sfnt_off00009a92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A92 16932 bytes
SHA-256: 0ae4550e385ba9604a65c2938a718249dc30e303f0a121ab6216ebca73c2cc67
font_03_sfnt_off0000b2d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2D8 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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