Malicious PDF — malware analysis report

Static analysis result for SHA-256 eea0befcad444be3…

MALICIOUS

PDF

84.8 KB Created: 2020-12-17 02:24:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 29ebe5f993d9702e1f108ad5cb3726cc SHA-1: 7b0d5194f0f0736e64e2ba5efdf63c4b1fc40bb3 SHA-256: eea0befcad444be39ba07b87b27af0a2512cfd65828224c7c3a2b52ec41dc8af
156 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, with a critical heuristic identifying it as a 'PDF_SEO_LINK_FARM'. One of the primary external URIs points to 'traffset.ru', which is often associated with malicious redirects or phishing campaigns. The ClamAV detection and ML classifier also strongly indicate malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/strik?utm_term=java+key+value+pair+list+string+string
    • https://getazaxebu.weebly.com/uploads/1/3/4/8/134866961/473353.pdf
    • https://vamukeroke.weebly.com/uploads/1/3/4/3/134353023/7040960.pdf
    • https://kazajiti.weebly.com/uploads/1/3/4/4/134456981/5344493.pdf
    • https://static.s123-cdn-static.com/uploads/4389797/normal_5fc4cc14686d5.pdf
    • https://gisetokitalakak.weebly.com/uploads/1/3/4/6/134600310/nugit_nikuzigibimamoz.pdf
    • https://senobatupubem.weebly.com/uploads/1/3/1/4/131437889/bivawewavegujoxu.pdf
    • https://solezoxi.weebly.com/uploads/1/3/4/6/134654925/jipafasej-dalidaruz-pozavase-bezozitija.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wozowuledij/risk_game_free_for_windows_10.pdf
    • https://s3.amazonaws.com/warapagefasovi/88397649194.pdf
    • https://s3.amazonaws.com/retisovojor/hysys_tutorial_distillation_column.pdf
    • https://static1.squarespace.com/static/5fc64bd4084698658e8310f1/t/5fc9ebbf81b71b4085996f80/1607068609476/kiddie_swimming_pools_for_sale_near_me.pdf
    • https://static1.squarespace.com/static/5fc6cb9efc603311fbf61aa6/t/5fcd01e7e43f2b00a8ab4311/1607270889959/things_you_can_talk_about_yourself.pdf
    • https://s3.amazonaws.com/winumigutam/hack_a_wii_guide.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010a9d.bin
f0460f9ee9391f59542ab7a5e5300eaff9e4d51b83b89905fcc09732e2243ea1
pdf-font-stream PDF embedded font (sfnt) at offset 0x10A9D 5200 bytes
font_01_sfnt_off00011c7a.bin
4698a1dc5676aac8624163874a53a9deee9dfc27f3c5bf8abd642affaf0fd23a
pdf-font-stream PDF embedded font (sfnt) at offset 0x11C7A 12560 bytes