Malicious PDF — malware analysis report

Static analysis result for SHA-256 84457553b19b5780…

MALICIOUS

PDF

35.3 KB Created: 2020-11-05 02:18:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: ec56c0bd7f97a27c48a4a111919a9d6c SHA-1: 2f3ae3f42dbecf2ebdd68efe2dc2985b251a1589 SHA-256: 84457553b19b5780dd01c97fd41f42089f2a3be159efd6642470211055c1553a
114 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file is identified as malicious due to its structure and embedded link. The 'PDF_IMAGE_LURE' heuristic indicates it presents as an image-only document with a clickable action, a common phishing tactic. The 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic confirms the embedded URL, 'https://gettraff.ru/aws?keyword=kyocera+fs+1135mfp+user+manual', leads to known malicious infrastructure. The ML classifier also strongly flagged this PDF as malicious.

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.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 35 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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/aws?keyword=kyocera+fs+1135mfp+user+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369308/normal_5f890a3497cf0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371020/normal_5f95cdc7e94e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412599/normal_5fa33b8b1fc76.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367912/normal_5f91e3cb1f50e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://uploads.strikinglycdn.com/files/a390c7c0-007f-4dc4-9c37-0e445f38ad53/mantos_e_palmas_espalhando_vai.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ca9ff3f-1056-422a-8816-4d68dbf8828b/80732542225.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d72cba6e-84b0-4086-aa28-818ba9cad434/tazina.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31a990db-ec9a-495f-a077-29ed9d4d97f8/74057662537.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4004e775-4123-4dcf-be36-030f4fb7b001/robavigedubokopanitugojix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e6e4c27-314e-4244-a1af-e01cdd52b6db/comment_changer_pompe_de_gavage_lagu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52ca59a4-78cb-40fe-ae33-a258d2535f41/64045020516.pdfIn PDF document text
    • https://s3.amazonaws.com/xedobox/twelfth_night_worksheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e62a8e76-f47f-44a2-bc7e-12d6994ae6a6/77995338417.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://www.gnu.org/licenses/gpl.htmlIn PDF document text

Related samples 4

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_off00004084.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4084 5572 bytes
SHA-256: 5e2e7d4994ca3438f5641e0602685892c4210bbda5f0dd355c81a5559865ae22
font_01_sfnt_off00005373.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5373 6684 bytes
SHA-256: 5db99e49b3e1bb2f2071d3ce0545d916f2e3d26b47297ac8406e0f1041a2b1c9
font_02_sfnt_off00006538.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6538 7952 bytes
SHA-256: 783c4a29a3adf86958e0d60968c2c48c0742e298b88280340ecc71cbc897dcd0

Open this report in the interactive analyzer, or submit your own file for analysis.