Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc17fecfe21daf65…

MALICIOUS

PDF

34.9 KB Created: 2020-11-06 04:17:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: f7806b9b659e8316e25a381e90fa4760 SHA-1: 2d3e8a5be03489d5d57704dea92b9f90bf7f4b8d SHA-256: cc17fecfe21daf6592841169b78eab7a53a1a46466cab48d78a96005652e81a6
96 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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://traffking.ru/aws?keyword=difference+between+animal+and+plant+mitosis PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4403121/normal_5f91c047cf773.pdfIn PDF document text
    • https://jokonufukitis.weebly.com/uploads/1/3/4/3/134399540/jupesoga_xafapeduvuno_xagakebevadu_lexakuvamuwiv.pdfIn PDF document text
    • https://pefemodadiz.weebly.com/uploads/1/3/4/5/134520562/nefegumoxabu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/538045a2-7501-4adb-8ac3-9deec83379fe/13473175837.pdfIn PDF document text
    • https://s3.amazonaws.com/watoti/24326029637.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84ab3b98-38a6-4965-a5d3-edf1dfa1a535/dymo_letratag_qx50_user_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0280c46c-3388-43d5-863a-15b730798963/glencoe_physical_science_chapter_4_test_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/716c131e-e1fc-4655-a48d-69a560b2010e/denon_plattenspieler_dp-40_f.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2c9587b-fdaa-424b-858e-9debb2c7ba95/11023424579.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bc78613-261e-47a6-b769-404423023d3d/get_3_squares.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3c8d06f-5a41-42da-b3ab-68145aca0a45/four_rightly_guided_caliphs_timeline.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8569dc7-78ad-4805-a8bc-8b07c0640c43/zejusepozenanepetapojizu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42b94d17-4fbe-43c2-acda-4bd336cafb60/betatoraliwurugoxazegido.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004d24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D24 5532 bytes
SHA-256: 5852062f54d6fbdbe7a918eb630822a1ce83e89d93a69a11ac22dfbef47fcd79
font_01_sfnt_off00005ff0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF0 9140 bytes
SHA-256: 56ba12693ddfb5713a536560d7a2ee64b6a475c62aa82b1e5d0c9d93399e4203

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