Malicious PDF — malware analysis report

Static analysis result for SHA-256 337f36def4c51f41…

MALICIOUS

PDF

44.4 KB Created: 2020-10-10 12:02:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 48bed0016c3977d5d2434055fe847903 SHA-1: 34fb3bbac7e94d72a3bbb8df50ac60648bea47e4 SHA-256: 337f36def4c51f41f2834299785fb1251c1470fcd12adfa7005f4fdbd9b629cf
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ggtraff.ru/strik?keyword=sim+girl+dna+2+download'. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains this URL, suggesting an attempt to lure the user to a malicious site, likely for further exploitation or credential harvesting.

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://ggtraff.ru/strik?keyword=sim+girl+dna+2+download In PDF document text
    • http://files.ctdanceconservatory.org/uploads/1/3/0/7/130776176/a93c593357.pdfIn PDF document text
    • http://buted.thevillagecorner.net/uploads/1/3/0/9/130969868/mewukebe_toxuvukopovedex.pdfIn PDF document text
    • http://kamenu.englishservicesforscientists.com/uploads/1/3/1/4/131406202/ded20.pdfIn PDF document text
    • http://files.loyolamarylanddanceteam.com/uploads/1/3/0/7/130739298/00bb11d4c.pdfIn PDF document text
    • http://datuxume.eys3000.com/uploads/1/3/0/7/130738870/4605891.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://cdn.shopify.com/s/files/1/0479/7543/2348/files/bronze_baby_shoes_uk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7708/2019/files/kitchenaid_superba_refrigerator_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/7575/1067/files/development_and_transformation_of_social_structures_1900-present.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0734/3779/files/pumefa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74bb5bd4-0cd6-4746-9fad-812b996582c3/24418598242.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f7a461d-a306-41b9-a4ee-624acd4e7022/83863284435.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34d2b343-950e-44cd-b8da-c5e63846e00e/73720518887.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_off0000635d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x635D 4884 bytes
SHA-256: b2569e4173bd8e2cd486342452f6bebddc011cc4a3f436266e991c04103c0583
font_01_sfnt_off000073ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73CA 10280 bytes
SHA-256: aa908abd809344ab0bfd6fd06f8fab8f1c2d488f397139a702ee1b7e3d8f2cde
font_02_sfnt_off000096ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96EC 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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