Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e3664024833d98b…

MALICIOUS

PDF

81.1 KB Created: 2020-12-26 13:57:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: c2b462e71292a24014a5275f7e037b38 SHA-1: bab5a4c94c525bffe1ee89cf16435e4ce0f62da5 SHA-256: 7e3664024833d98bfe753e97eae1da1f4fad783c7898943a9ee5a854340cfd89
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to external websites. One critical heuristic identified a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, appears to contain metadata related to 'Mykull reeves merch' and 'wkhtmltopdf', suggesting a lure to potentially malicious content disguised as merchandise or related information. The presence of numerous PDF links and a critical redirector link indicates a phishing or malicious redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • 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://gettraff.ru/strik?utm_term=mykull+reeves+merch In PDF document text
    • https://cdn-cms.f-static.net/uploads/4415051/normal_5f9b63aa12e5e.pdfIn PDF document text
    • https://fupefasupemeze.weebly.com/uploads/1/3/4/3/134315788/poworapilap.pdfIn PDF document text
    • https://cdn.sqhk.co/lasesekov/apvhdig/star_wars_kotor_remake.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459640/normal_5fae15703bea5.pdfIn PDF document text
    • https://cdn.sqhk.co/samigimas/dGibdgh/42494089104.pdfIn PDF document text
    • https://bolowarokarov.weebly.com/uploads/1/3/4/3/134349384/1d298dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369506/normal_5fb354620fe3c.pdfIn PDF document text
    • https://cdn.sqhk.co/ponigubik/H4hagjJ/origami_heart_envelope_box_step_by_step.pdfIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bizamesuwepe/death_on_the_nile_2020_cast.pdfIn PDF document text
    • https://s3.amazonaws.com/pizivurapab/6289978089.pdfIn PDF document text
    • https://s3.amazonaws.com/wuxupewu/67290190134.pdfIn PDF document text
    • https://s3.amazonaws.com/bifadiwuwileji/blue_dragon_osrs_slayer_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/ritoma/mudiser.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000eccc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xECCC 12428 bytes
SHA-256: a27335634f4ad9314585fa0e057cc7a591831ae1f29362ea0c7dc75ab77fb6fc
font_00_sfnt_off0000cf73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF73 3416 bytes
SHA-256: 6d111073688af0d07076bd1ddeae0875b6a43bf076d196644e78d035338a9541
font_01_sfnt_off0000dbab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBAB 5060 bytes
SHA-256: adb3a9b1f5d06dfd1fcea6b153f479c2ca4e8fdc9f3a38d4d9d14233025af115
font_03_sfnt_off00010fbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FBD 10896 bytes
SHA-256: 3fef884f1153b36f33dc81f86c1d773ff1cd611fdd6d6a525f998eeea9710fdc

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