Malicious PDF — malware analysis report

Static analysis result for SHA-256 98bdad3171236d78…

MALICIOUS

PDF

67.1 KB Created: 2020-12-15 13:03:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 767696c86df27a4c1034433de9a7acda SHA-1: ec55fd124ca23f8e901ee6c4391f2ee8a31d13cb SHA-256: 98bdad3171236d7804061d7682f716a54a149b3b4cc79409af6fd2ee0c1859e4
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/123?utm_term=wrought+iron+plant+stands+indoor'. ML classification and ClamAV also flagged this file as malicious. The document body appears to be obfuscated or corrupted, but the presence of a malicious URL is sufficient evidence for a phishing or malware distribution attack pattern.

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://gettraff.ru/123?utm_term=wrought+iron+plant+stands+indoor In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc5a9efc6d9645836428c95/t/5fc65e655147b148040c8d7f/1606835816260/how_to_make_origami_heart.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8febd26-8759-4632-adf1-6055424b534f/22243650389.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/romantismo_no_brasil_poesia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c491d823-595a-4bae-b973-3e49f4137d0c/wow_breath_of_bwonsamdi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7457b2b-9c97-46a1-91f5-6f55d109ce46/55802156132.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30476639-ea3f-46b4-a7de-416e923b5825/jibopituz.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc28637c89e1c4b8fc8d350/t/5fc502d59ee0f32b87f14d4c/1606746837595/92414721461.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b27a5a25-a05c-4b4a-bf19-25322d2a80c8/10_day_juice_reboot_recipes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07c533ca-d563-493f-bb37-431acda860ff/77676758938.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/995b3a67-c795-40ea-92aa-c557ddf32ad3/fedexinotosizuxuxuxemiwi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78dcec73-5302-4e2e-b303-09b75e24ea98/1258822825.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdf1439d7936484053aa90/1606283588634/rainforest_exersaucer_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f3c60e1-301d-417e-bdee-d7db70780317/gexijaxotowufalebekalore.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e52862c2-f486-4339-9aea-aaf402614b80/25166971585.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f946971e-06d7-4f86-9d07-b6c70a853055/craftsman_6.5_hp_21_inch_lawn_mower_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2a7ede9fc3622d52d662b/t/5fcaaf8ba400d748f5c322a1/1607118732791/rokodufidas.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_off0000c893.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC893 5236 bytes
SHA-256: a9702ac0b0e09dba881a1b7dbc0f74f70a00a6967a7c47bedf6540badab031c1
font_01_sfnt_off0000da69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA69 11008 bytes
SHA-256: 45808ea8144ffdbd4f769d04d290ffa8f88689055c929b6267e37446524507f1

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