Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cf6f192c5338a4a…

MALICIOUS

PDF

70.5 KB Created: 2020-12-13 15:48:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 0fccf67143808d93e283dff270a36d42 SHA-1: 16ebf7df2eb2905e3845094fe28fc83b1b9923bc SHA-256: 3cf6f192c5338a4a4fa158db6e59130f3e5774c39736b9efb36e9717cca6e9ff
214 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with critical heuristics identifying it as a malicious redirector and a link farm. One of the primary links directs to 'gettraff.ru', a known malicious redirector. Another link points to a PDF hosted on 'weebly.com', suggesting a potential multi-stage attack or content delivery mechanism. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/123?utm_term=john+martin+reservoir+state+park+county+road+24+hasty+co In PDF document text
    • https://lefiletigej.weebly.com/uploads/1/3/4/5/134597596/vevesojezitijavibax.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373757/normal_5fb6e7d302546.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410730/normal_5fc12f38c08e1.pdfIn PDF document text
    • https://buranujepexu.weebly.com/uploads/1/3/4/3/134339299/b77bbee.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://static1.squarespace.com/static/5fc0d6092e537a05ef08bc6e/t/5fc2ccc23c02f22b9d6967fe/1606601923034/linden_train_station_parking.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/72999105872.pdfIn PDF document text
    • https://s3.amazonaws.com/metakibeme/sscnr._net._in_answer_key_2019_mts.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5ce31d26ff1194f9586a7/t/5fce3dced336b863f0ee56ff/1607351759448/blue_heeler_australian_shepherd_mix_price.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04353e64-03c5-4a29-a660-9345754668a6/segopenolubu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/893067ce-fd87-4076-9343-8f59ec86503b/ridgefield_tax_collector.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5c475c89e1c4b8fdffacc/t/5fc626c63570fb44d1d4a027/1606821577721/past_future_song_video_download_djpunjab.pdfIn PDF document text
    • https://s3.amazonaws.com/xukirizugukugi/sample_fire_investigation_report_format.pdfIn PDF document text
    • https://s3.amazonaws.com/genedonapubefe/business_lessons_from_a_radical_industrialist.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c75cc6a-66a7-4698-82f8-080f0f31b053/wrap_text_around_image_powerpoint_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/cisa_official_study_guide.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c868.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC868 5600 bytes
SHA-256: 507278965096ada018c1ef4aad4abd944996cb44319707fef3e68e3c249730f1
font_01_sfnt_off0000db52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB52 10344 bytes
SHA-256: b58848a3cacb88b78c776dbc24e8f55871852ca32c48904abc3a610378be1419
font_02_sfnt_off0000fecd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFECD 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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