Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c5d2c960ca58cf2…

MALICIOUS

PDF

46.2 KB Created: 2020-10-01 21:33:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: e72073d3f2ed27b609d014c352c2b402 SHA-1: 63c6dbae5fab87c5723736a3219bc0fcd5ca02e2 SHA-256: 2c5d2c960ca58cf226c8ddbf1fb16aa59871ab43f4c718551d02a9bab171fe01
154 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, directing users to 'https://gettraff.ru/strik?keyword=pneumatic+drilling+machine+project+report+pdf'. The document body also contains this URL and numerous other links, suggesting a link farm or redirection tactic. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent, likely for phishing or malware delivery.

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.
  • 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.
  • 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=pneumatic+drilling+machine+project+report+pdf In PDF document text
    • https://site-1036781.mozfiles.com/files/1036781/lunawovivilubirijuzom.pdfIn PDF document text
    • https://site-1037886.mozfiles.com/files/1037886/2332309744.pdfIn PDF document text
    • https://site-1037098.mozfiles.com/files/1037098/dodorewasileta.pdfIn PDF document text
    • https://site-1036840.mozfiles.com/files/1036840/74464798128.pdfIn PDF document text
    • http://funof.dgartistnetwork.co.uk/uploads/1/3/1/3/131379803/lewusimevajalo-rosogelagu-wevewasafip-nigomimeb.pdfIn PDF document text
    • http://files.heartsandhandsindy.org/uploads/1/3/2/6/132681694/4552139d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6059/5354/files/jebikusomujemug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/9953/2701/files/organizational_ethics_a_practical_approach_3rd_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/9949/9928/files/8659420531.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7202/3445/files/92299789148.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/3051/4344/files/dd_genasi_lifespan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6991/5814/files/26252031107.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/0184/1317/files/musisakuwinogifolusad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/0024/4635/files/miscellaneous_light_topics_answer_key.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_off000075b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75B7 5468 bytes
SHA-256: 406450d647d9d860037dec0c28646260ef3ac3a3f054a54fb34c5d897865b7f9
font_01_sfnt_off00008828.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8828 10420 bytes
SHA-256: dfbab9027165e0b7f9b457c4eac4b5fc4397d81f46b4d2ff057d90c9c406092c

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