Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc2fc8c149b17254…

MALICIOUS

PDF

66.0 KB Created: 2020-12-18 04:43:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 8d4ca69367b17da8719e12d540f3297f SHA-1: 18831796a0d0851ff7fde60de34db12f15711e6b SHA-256: cc2fc8c149b17254238502c327ad3a3484903b817e18da954aa0b96a260a2315
154 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?utm_term=boss+monster+rules'. ML classification also strongly indicates maliciousness. While no scripts were explicitly extracted, the nature of the redirector suggests the PDF's primary purpose is to lure users to a malicious site, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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?utm_term=boss+monster+rules In PDF document text
    • https://cdn-cms.f-static.net/uploads/4403818/normal_5fd257471963d.pdfIn PDF document text
    • https://wejusapud.weebly.com/uploads/1/3/4/6/134614256/wazipejo.pdfIn PDF document text
    • https://jamakebowixon.weebly.com/uploads/1/3/4/4/134477175/xutubuf-wotigireposi-lofosun.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417222/normal_5fafd62066111.pdfIn PDF document text
    • https://nikevafojo.weebly.com/uploads/1/3/4/6/134680040/wadidedori.pdfIn PDF document text
    • https://rezolokad.weebly.com/uploads/1/3/4/7/134718373/d7861792796ef8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/8039817342.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f7178139af0376459952/t/5fc9994e87b36f46d4f8cdc8/1607047505291/dead_ahead_zombie_warfare_hack_iphone.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/soundcloud_for_windows_7.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4e10e2e34347c705dc52c/t/5fc5e926cb3e0f57711c1172/1606805799374/jrs_upper_red_lake_fishing_report.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc187916609fd0ee795caa4/t/5fc3cfaabc819f1cf44d5229/1606668204719/74473407874.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/sigagufudipetepozamareko.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc39115e5c7695ca9ac5e61/t/5fc779d748d5672cfb40909b/1606908375261/groupme_support_chat.pdfIn PDF document text
    • https://s3.amazonaws.com/sepovutapakogaf/67816351348.pdfIn PDF document text
    • https://s3.amazonaws.com/fukezavazuj/jelevomofakaxufixexeno.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4ff8a7d0c8f249d5b3222/t/5fcabb0e0a585244391e66de/1607121679458/bird_comic_meme_generator.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_off0000c9af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9AF 4672 bytes
SHA-256: f067947ef5d21c6cec2da8b364e1feffcc597ac6a8632fda085cd944d997efb2
font_01_sfnt_off0000d977.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD977 9952 bytes
SHA-256: d76852ca4eda03fc1d316cc6bb0c3b37775ed299b6636cbd61b29c84d24463bf

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