Malicious PDF — malware analysis report

Static analysis result for SHA-256 d486752e35fdebfd…

MALICIOUS

PDF

45.0 KB Created: 2020-10-09 11:56:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: d01690a6b4332e01ac8a5f254d451a4a SHA-1: 7ce2b4d5ee37ade0c491a544f5948ad886dcd8dd SHA-256: d486752e35fdebfd7c0741d019983714b5de8c0de74d434f3a0c6c1b9506eca0
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The embedded URL `https://cctraff.ru/strik?keyword=amika+hair+dryer+brush` is the primary indicator of malicious intent. The document body, though heavily obfuscated, also contains this URL, suggesting it's the intended lure. The ML classifier also strongly flagged this PDF as malicious.

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://cctraff.ru/strik?keyword=amika+hair+dryer+brush In PDF document text
    • http://files.villagegreenla.net/uploads/1/3/2/6/132681359/454706.pdfIn PDF document text
    • http://files.alexwilsonpianist.com/uploads/1/3/0/8/130813731/koriwazidajabod-mewalanage-sudug-vivuluburoj.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/fb0b5d6d-7351-48bb-93dd-cf0b525ec35f/tejotemepe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95b64cd2-ba41-456b-b2be-110f662268d9/99250444348.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a42150d-8128-40fb-bdf0-18cae443f5ff/96639635633.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5fcbc3d-f6ac-44cd-bf01-a63817db4b44/meralimezabejeligow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d0a840f-192c-456d-8ab1-72325a7b5d33/kepevizawegawelowuf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a0f9e5f-e8de-4165-909e-8f1e742d2dce/boseresoxixutokiwaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0502/0830/files/3588981300.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/1335/9776/files/crane_humidifier_filter_cartridge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0243/6512/files/arrl_handbook_2019.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69F9 5328 bytes
SHA-256: d0fa5620b9fe30ff0f6c4b196e415e9ce307eaadfb4b49a345f9c64903f0dd00
font_01_sfnt_off00007be5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE5 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off00008472.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8472 10260 bytes
SHA-256: f8540932f39df63619723a31bb74aadaefc8baf24aad55cedbe15fe8bba975c7

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