Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc9a2051ae343c46…

MALICIOUS

PDF

82.7 KB Created: 2020-12-17 00:58:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: a667f185e0608ab28cfde93c8b7ee2ca SHA-1: 71ff9784d735c6b177dcc831fd386916caebc801 SHA-256: fc9a2051ae343c46997a23aabe6bf7e941a57c717e8b00a4a39bf20a8feff67e
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URI pointing to 'trafffi.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to fanfiction, aiming to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/strik?utm_term=female+peter+parker+and+tony+stark+fanfiction PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4451929/normal_5fb572e4ab1e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386349/normal_5f9b3dd31fcf1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368496/normal_5f88adfc8a512.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373788/normal_5f9e566d4792c.pdfIn 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/5fce2dc706af1e3f448c2ec4/t/5fd6b79a481cfa31add4ee19/1607907228208/turibatu.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/lean_in_sheryl_sandberg_free_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc593df27a199023ad5232a/t/5fca8ab0dd8a8730b06a4ec1/1607109297727/60542274058.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47c53c71-029b-4bb3-ad89-b338adb94d70/57920116317.pdfIn PDF document text
    • https://s3.amazonaws.com/jiguwuzobozobaz/wirotawik.pdfIn PDF document text
    • https://s3.amazonaws.com/wudibirewuduto/40748925523.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc53b031c8c7413144e61dc/t/5fcea22e1f1c3930cc1745f7/1607377456914/rojogorobovu.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e04e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE04E 3000 bytes
SHA-256: c388a55c950104677382a7051b7acc03423eeee2839e444682674068bffd17bc
font_01_sfnt_off0000eaf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAF6 5420 bytes
SHA-256: 383dbefdfc7467079d4ef0658ae3dce902e7cdca19cdb6a9778357a83297baed
font_02_sfnt_off0000fd5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD5B 13476 bytes
SHA-256: a9088aa4274828d69e3f92413c6b3ea225d2b8d9efb0da15ed6931fbf0c6d0c8
font_03_sfnt_off00012812.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12812 16164 bytes
SHA-256: a894b2a58ea94a22d72917c3fe7ce1d02aac4ce6114da251245bfe6cd833a185

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