Malicious PDF — malware analysis report

Static analysis result for SHA-256 332e463d9fb95ac9…

MALICIOUS

PDF

71.8 KB Created: 2020-11-23 20:55:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: bec87253a837f172e3c4a19478c47f98 SHA-1: 6e73f9f1302a1b057a4bdf3fcedd920db8eba38e SHA-256: 332e463d9fb95ac916d42fa9a8f58daaae273117cd1bae90883a550f24066248
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 0.9998

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://cctraff.ru/strik?utm_term=clash+royale+on+pc+download In PDF document text
    • https://jonelezada.weebly.com/uploads/1/3/4/6/134603833/b8bb04.pdfIn PDF document text
    • https://wemibevufiwoseb.weebly.com/uploads/1/3/0/8/130813314/c8894ee88cf05.pdfIn PDF document text
    • https://simixoko.weebly.com/uploads/1/3/4/8/134867908/4181608.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/gogonof/jitemotifevaxiluxubaveku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e45a6a52-0e52-4857-8ef4-e46d2211759c/natixivemitegusajuzumol.pdfIn PDF document text
    • https://s3.amazonaws.com/zuses/induction_training_report_example.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb686912-acb5-4ade-bbc2-57ce4bda9ef0/keto_diet_menu_for_beginners_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gogonof/6884465936.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35c946bf-87e4-4be3-b281-8046bd84a241/xolematuli.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a90135c-a1bc-44e0-b879-849e45c5eada/45801607702.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e89d8ff-41aa-4c81-bd7c-526841e740af/44832299042.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d99eac8-e26d-4564-a579-86bf36e99cd4/47504283600.pdfIn PDF document text
    • https://s3.amazonaws.com/fezenur/whynter_arc-14s_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60d2f3ef-8188-4c65-bcb3-dab758334e48/88490092191.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/442e318a-f310-4978-b4b3-ae9dd5511b22/tuxesurokefivavigebalaw.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/77604205551.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cfa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFA0 5040 bytes
SHA-256: 8c2cd8f0c37c3f5dc93aac3db4cc98b2d09faf471e00bd331f24bb5f83ab104f
font_01_sfnt_off0000e0c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0C2 10256 bytes
SHA-256: c4b3105d24ec3f4e24f1dc1f445898604ef0df764f3836da2f06879eef8ae908
font_02_sfnt_off000103ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103EE 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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