Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f2da38bb5357605…

MALICIOUS

PDF

68.1 KB Created: 2020-12-03 18:49:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: a260818e1d72ed0ebae2f75f49efa08e SHA-1: d836537e69a6ce70da9a249e5c397c71d74c1fde SHA-256: 2f2da38bb53576054fb1d1c33832da31044914b7525d1651e551c975307d2723
154 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, https://cctraff.ru/aws?utm_term=works+cited+page+mla+format+powerpoint, is identified as a malicious redirector. The ML classifier also flagged this PDF with a high probability of being malicious. While no scripts were explicitly extracted, the nature of the PDF and the malicious URL suggest an attempt to redirect the user to a harmful site, likely for phishing or 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://cctraff.ru/aws?utm_term=works+cited+page+mla+format+powerpoint In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367621/normal_5f89879e20fd4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403533/normal_5fb2628b398fd.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/3229a8d4-98e1-4a6f-be66-ec61561df5de/98629499136.pdfIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/gross_anatomy_of_lower_limb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38f3bd14-42f4-4d2f-9fa3-597820ff12fb/51318056449.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0ea8e78-aab3-4110-802c-308cb9fb5974/vikoladilevomezifu.pdfIn PDF document text
    • https://s3.amazonaws.com/jijumupade/ropunowan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/993de8c8-075a-4bbe-af7e-cfa9102493d9/thats_what_the_old_ones_say.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc542159955c744b5580f48/t/5fc646593570fb44d1d84da8/1606829657588/thumbelina_barbie_full_movie_123movies.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0dc532e34347c7043ce2c/t/5fc168919ee0f32b8788053d/1606510738021/26118343857.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa213bbb-a153-4f5c-a7f0-a091120fc018/37649443592.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1dc54be9b693951118edb/t/5fc8c42fa9f67830ca0306a0/1606992944227/download_simply_piano_by_joytunes_premium_apk.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc549542e537a05ef25fbe0/t/5fc6ffd1bfb90028be46324a/1606877137030/border_patrol_requirements_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7c2aa06-ed79-4477-bcc3-8a0fe62045fa/dujarolidatulivigak.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_off0000cb98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB98 5644 bytes
SHA-256: 1afbbb3b31120ac7f9ea80d48c5a963487074ece9ec0ff14f9828569149d8966
font_01_sfnt_off0000deda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEDA 10880 bytes
SHA-256: d9ddaf4477c046e4983159e2c0291e0268945f25d7b7602d8ff864e963303b07

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