Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea82541f0eaab6f3…

MALICIOUS

PDF

78.8 KB Created: 2020-11-14 10:02:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: faf34cff9460c7caadca01d890da4621 SHA-1: d66b63ca8da1528e453f62ed5b2a402120d18187 SHA-256: ea82541f0eaab6f363d8ba682fb0b7bab1772a49488af28e963ef5fbcb26b4ec
222 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, including a known malicious redirector and a large number of PDF files hosted on Weebly, suggesting a link farm or phishing campaign. The presence of a 'download button' heuristic further supports the idea that the document is designed to trick users into clicking malicious links. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/123?utm_term=discord+read+message+history
    • https://mejotumuv.weebly.com/uploads/1/3/4/6/134636951/dudupo.pdf
    • https://cdn-cms.f-static.net/uploads/4366622/normal_5f8c677e496cd.pdf
    • https://faworufobideped.weebly.com/uploads/1/3/2/6/132682851/9337252.pdf
    • https://cdn-cms.f-static.net/uploads/4392463/normal_5f9edf32293bd.pdf
    • https://buvojitode.weebly.com/uploads/1/3/4/6/134630820/kanajenizemesa-lubesag-papegazadiwo.pdf
    • https://tedumuwoke.weebly.com/uploads/1/3/1/3/131397970/mudovef.pdf
    • https://cdn-cms.f-static.net/uploads/4393181/normal_5faa39caa38c0.pdf
    • https://vatewiwep.weebly.com/uploads/1/3/4/4/134482367/zamixaxa.pdf
    • https://sokuvotaboraj.weebly.com/uploads/1/3/0/7/130776263/3909325.pdf
    • https://cdn-cms.f-static.net/uploads/4366365/normal_5f89ae4929425.pdf
    • https://cdn-cms.f-static.net/uploads/4417128/normal_5f9b1782e5fdf.pdf
    • https://cdn-cms.f-static.net/uploads/4382004/normal_5fa1a05a92320.pdf
    • https://mofivekirupu.weebly.com/uploads/1/3/2/7/132740685/wabonosegisuranu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tojabixefova/74092929915.pdf
    • https://s3.amazonaws.com/henghuili-files/87534851567.pdf
    • https://s3.amazonaws.com/tejuvonixag/wireless_speaker_transmitter_for_tv.pdf
    • https://s3.amazonaws.com/pukiza/23535023981.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f03c.bin
9e47031ee81f197d85d840504329705732fc6f41f63e63e1123b9f8810d917ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF03C 5420 bytes
font_01_sfnt_off0001028b.bin
54e6adc3d7e1f04166c28211353316055f05e7870f4f955594000926fc837b2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1028B 12888 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.