Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c1bcf4ec483b910…

MALICIOUS

PDF

70.0 KB Created: 2021-01-14 06:08:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 2f96a0fa9caf573d82c7a39118214e60 SHA-1: 542205b4f53d42906ff498ac6eac52d42eb51e56 SHA-256: 9c1bcf4ec483b9101b2721752563f0acbeb190089130871c8f88f4a112709a4f
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous links to external websites, including a known malicious redirector at 'https://cctraff.ru/aws?utm_term=alabama+power+outage+report+number'. The document body, though heavily obfuscated, suggests a lure related to an 'Alabama power outage report number'. The presence of a link farm and the ML classifier's high confidence score indicate a malicious intent, likely to direct users to phishing sites or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://cctraff.ru/aws?utm_term=alabama+power+outage+report+number In PDF document text
    • https://xuxukogizi.weebly.com/uploads/1/3/5/3/135320654/mokam_gugonuwidozub_likujoxezedu_jebejafovipize.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367927/normal_5f9eacf8462bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381751/normal_5f8b16adf3c38.pdfIn PDF document text
    • https://jowamevo.weebly.com/uploads/1/3/4/5/134511132/6a8095.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475738/normal_5fb4fa2459a40.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457311/normal_5fbedc1e4d888.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489247/normal_5ff9b62fce4cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387806/normal_5fa8c567e7364.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487197/normal_5fc9e0fa42af7.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/tujeviwakirawu/16107451973.pdfIn PDF document text
    • https://s3.amazonaws.com/xunilukegez/88369169273.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/gogo_squeez_applesauce_nutrition_information.pdfIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/84653834264.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxenipup/sosonarexator.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d27e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD27E 5184 bytes
SHA-256: 36a963cb22f44719b8b190874142acc2771720b273143bef8460ff31836fecf6
font_01_sfnt_off0000e41a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE41A 11416 bytes
SHA-256: 25140107a480af023632662a08c3da83436a50ab8a4ea6eb0b4f8fae773762e7

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