Malicious PDF — malware analysis report

Static analysis result for SHA-256 8132c6bf14a30b4a…

MALICIOUS

PDF

77.6 KB Created: 2020-12-16 21:53:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: f467456ecd478b0466eb405b14da6aa8 SHA-1: 7758274fd9ef7e4faffa9f165229d163c07f8125 SHA-256: 8132c6bf14a30b4a85628e971141fe19f5e91f54345228bd17b8eb16a7541fd3
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a critical heuristic identifying it as a link farm. The primary URL, 'https://traffset.ru/strik?utm_term=rose+water+younique+review', suggests a lure related to product reviews, likely to deceive users. The presence of multiple Weebly-hosted PDF links further indicates a coordinated effort to redirect users to potentially malicious content. No scripts were extracted, but the PDF structure and embedded links strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • 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.
  • 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://traffset.ru/strik?utm_term=rose+water+younique+review PDF link annotation
    • https://betirowi.weebly.com/uploads/1/3/4/6/134661799/458718ac05811dc.pdfIn PDF document text
    • https://vazitaxigenot.weebly.com/uploads/1/3/4/6/134640409/xomibarodatetojoma.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366340/normal_5f8a1f886c1dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392853/normal_5fb85e356f975.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/genedonapubefe/spider_man_noir_mask_template.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d3b00b6b03258f353712/t/5fc58f42bc819f1cf4971a77/1606782788497/neo_scavenger_vehicles.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1407d8787e879896e58f6/t/5fcefd4ab8233e30dfa09b2b/1607400778971/netflix_series_away_rotten_tomatoes.pdfIn PDF document text
    • https://s3.amazonaws.com/jojitagifuva/puvone.pdfIn PDF document text
    • https://s3.amazonaws.com/gewisetug/formation_body_mind_centering_france.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbffe9d5687f52b6b7c161f/t/5fc260b95147b148047fec0c/1606574265580/manchego_cheese_substitute_parmesan.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc36a015687f52b6b9139b6/t/5fc9359aabf8851c5d5f0b2b/1607021979107/best_vegetable_chopper_dicer_mandoline_slicer.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_off0000d0c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0C5 5032 bytes
SHA-256: ba0783a226934cf2801750a3a80a542aa221d7b91a43c613ee1197ebfbea4420
font_01_sfnt_off0000e211.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE211 1800 bytes
SHA-256: daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e
font_02_sfnt_off0000ea9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA9F 11904 bytes
SHA-256: 537b6d3da6bdbe74e3e0522167c80cf5ab976380b72adb90eb6cfbdcc0963450
font_03_sfnt_off00011302.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11302 16312 bytes
SHA-256: aad9bc0f36eadc3314e08670b59090120051e308b357201f134af3d0b781b2b0

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