Malicious PDF — malware analysis report

Static analysis result for SHA-256 be576285e3cfe760…

MALICIOUS

PDF

47.2 KB Created: 2020-10-29 15:42:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 502eaba810ddc4f34d9b4e7bf38ee996 SHA-1: 9c378fe4f8a982ab65db2d6f972d348a351006d5 SHA-256: be576285e3cfe7609366c705ce959ee49f9ae110e634a8a71d57dd12dd32c30a
94 Risk Score

Malware Insights

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

The PDF contains embedded URLs, one of which is flagged as a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the URL 'https://gettraff.ru/strik?keyword=wow+vanilla+mage+spells+by+level', suggesting a lure to external content. No scripts were extracted from this sample.

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://gettraff.ru/strik?keyword=wow+vanilla+mage+spells+by+level In PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/wogiselaruto-nokage.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418192/normal_5f980e744aedd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401546/normal_5f9a8e8f0d320.pdfIn PDF document text
    • https://sasakafu.weebly.com/uploads/1/3/4/3/134371045/9832142.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379610/normal_5f915131ccbdb.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/2d6dcfeb-7f22-4d2a-aa2f-0841008b1efb/pathfinder_gunslinger_prestige_classes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/9255/5931/files/xarabagijovosupavijari.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/6618/2820/files/animal_classification_flashcards.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/2555/8425/files/braun_welch_allyn_pro_6000_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/554c8a24-bba5-40c1-81fb-e02fbbfe3105/tosazofiligovigajufipado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2825/0276/files/52284951213.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007b51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B51 5452 bytes
SHA-256: bc00a965e92aadd4c4ea9399cce3a2e45f6d5f9c230125ca3a1ba3ba8b0e1168
font_01_sfnt_off00008deb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DEB 10032 bytes
SHA-256: b8ca2351176298fd464f48626011c09bcc8eba0426cf1d61d2fb6b822ce810bd