Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb100ed1fd74a160…

MALICIOUS

PDF

48.6 KB Created: 2020-10-01 04:15:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 9237969f59516ba450bc050af93c3157 SHA-1: b58e26369ec7b4d95d5cd8e4dddf8f04640b8cf9 SHA-256: eb100ed1fd74a1608d099181cf2ba70c7d188fbd29c420984714feeed8ba6f4a
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, https://gettraff.ru/strik?keyword=botswana+map+showing+villages+pdf, which is highly indicative of a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains text that appears to be a lure related to a 'Botswana map showing villages pdf'. 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://gettraff.ru/strik?keyword=botswana+map+showing+villages+pdf In PDF document text
    • http://files.amfcontractinginc.com/uploads/1/3/1/4/131453352/fadikumamolise-fujuzo-buvofuraj.pdfIn PDF document text
    • http://purivomof.kpadgett.com/uploads/1/3/2/7/132710712/3433586.pdfIn PDF document text
    • http://wizafamu.tautelab.org/uploads/1/3/0/7/130776617/77b0fe45d07ecc5.pdfIn PDF document text
    • https://site-1037061.mozfiles.com/files/1037061/pajawapufoxojewijonefegi.pdfIn PDF document text
    • https://site-1037135.mozfiles.com/files/1037135/lumikax.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/751debf0-5207-47bd-9dc2-c2fcbcb47c40/wujuguj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/634b1a7e-b4d3-42c8-a7d1-3ffbdb25f484/kixifog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8083b4a-2f45-4475-98a5-859438312174/miralafodimapupoxixepop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bee1cf06-4387-444c-86ce-dc0b156b0a07/17580124726.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6361ba77-072e-4f42-828c-47c082a727f7/memeveragujugubokezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6956/3290/files/kopofaboxuleparizujotixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5296/5792/files/zetowudonugibunojuber.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8933/0325/files/fakekoluguwejipowuju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/6946/4727/files/42542627122.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3676/9437/files/vetukonesufokudupagipor.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_off000077fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77FE 5560 bytes
SHA-256: 3e5a0f38aae7af48966c75ea59799e4b9444faea3a879ee547a876fdd22e0482
font_01_sfnt_off00008ae5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AE5 12592 bytes
SHA-256: f2b6e8aef0a775972babf96df74f0eea15d9807bd554d43eebb995c2fb454d1e

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