Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3e3b0cd0602c27a…

MALICIOUS

PDF

78.2 KB Created: 2021-01-16 02:47:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: e1a2de7ce5fcbb7714978a6f0647ad9b SHA-1: 1cb8d488d9bdf53759656aa7847997e4614d27ba SHA-256: c3e3b0cd0602c27a5325820dd0b96b7cdb35692f56aa1fb648beac38f5984890
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 'traffking.ru'. This URL is likely used to redirect users to a phishing site or to download further malicious content. The ML classifier also strongly flagged this PDF as malicious, and ClamAV detected it as a phishing trojan. While no scripts were explicitly extracted, the nature of the redirector suggests an attempt to execute malicious code or steal credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • 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://traffking.ru/123?utm_term=littmann+electronic+stethoscope+amazon In PDF document text
    • https://site-1173361.mozfiles.com/files/1173361/slice_the_pie_legit.pdfIn PDF document text
    • https://site-1198654.mozfiles.com/files/1198654/sago_mini_trucks_and_diggers_download.pdfIn PDF document text
    • https://site-1174929.mozfiles.com/files/1174929/48228008428.pdfIn PDF document text
    • https://site-1166042.mozfiles.com/files/1166042/post_op_hip_replacement_exercises.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/kabisebax/91891769800.pdfIn PDF document text
    • https://s3.amazonaws.com/dowesitobuga/data_warehouse_concepts_interview_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/the_working_poor_chapter_2_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/vukumesoj/papisa.pdfIn PDF document text
    • https://s3.amazonaws.com/safago/dexabolake.pdfIn PDF document text
    • https://s3.amazonaws.com/jowutoneranemuk/75993388703.pdfIn PDF document text
    • https://s3.amazonaws.com/waxegatulo/61089340990.pdfIn PDF document text
    • https://s3.amazonaws.com/xuxifuzituwu/rubobemurobosatemu.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/egyptian_arabic_course.pdfIn PDF document text
    • https://s3.amazonaws.com/getizar/immune_thrombocytopenic_purpura_management_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/fifomi/dolegitigu.pdfIn PDF document text
    • https://s3.amazonaws.com/sepovutapakogaf/nigegazew.pdfIn PDF document text
    • https://s3.amazonaws.com/mujesogi/51248445631.pdfIn PDF document text
    • https://s3.amazonaws.com/xasovewipeje/dwarf_fortress_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f344.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF344 5164 bytes
SHA-256: 51e6b5b743cb05e51ef5af12840fde9ff50077b47e41dd7df674cd87a2a891f5
font_01_sfnt_off000104a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104A9 10872 bytes
SHA-256: 11d309c950d13fa93e8b203789686f60f336a7cdcc8786fd3fead64c9da3d777

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