Malicious PDF — malware analysis report

Static analysis result for SHA-256 1954ffda903383c3…

MALICIOUS

PDF

79.3 KB Created: 2021-01-08 18:22:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 4e0421ac6e732f1f42b703745292f749 SHA-1: adaef268675876c1438c21aa198280b32a06c6c6 SHA-256: 1954ffda903383c39ecf68d5d5614191cdb7f196340f1ba54e401112e27f5ed6
156 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a phishing document and hosts a link farm. The embedded URL 'https://trafffe.ru/aws?utm_term=apowermirror+app++for+pc' suggests a lure related to software, likely to redirect users to a malicious site. The ClamAV detection and ML classifier further support its malicious nature, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffe.ru/aws?utm_term=apowermirror+app++for+pc PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4413118/normal_5ff760b85b20b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370270/normal_5fba6e8a1f574.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411922/normal_5faa1b361f410.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450639/normal_5f9e9cea64f3b.pdfIn PDF document text
    • https://cdn.sqhk.co/gutemokerezo/vggWOgg/download_stickman_downhill_motocross_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/lirotigi/ibjcjbp/66418356176.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376598/normal_5f982c87026a0.pdfIn PDF document text
    • https://najoduvojubowi.weebly.com/uploads/1/3/2/8/132815002/3797135.pdfIn PDF document text
    • https://fetesebi.weebly.com/uploads/1/3/4/8/134896421/957141.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://s3.amazonaws.com/vovuzize/gebogosobomesegopuvavo.pdfIn PDF document text
    • https://s3.amazonaws.com/mejigavukolu/34258377270.pdfIn PDF document text
    • https://s3.amazonaws.com/zufojadibi/cheapest_car_insurance_in_ny_yahoo_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/velose.pdfIn PDF document text
    • https://s3.amazonaws.com/mogipegi/convert_to_tiff_using_atalasoft.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/panduan_belajar_saham.pdfIn PDF document text
    • https://s3.amazonaws.com/numunenoji/corporate_social_responsibility_policy_statement_template_uk.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_off0000eeab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEAB 4632 bytes
SHA-256: bd2e5aab171b37c931de4b88536900018825208ecb3872c20ae18d65ef22f689
font_01_sfnt_off0000fe6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE6F 10396 bytes
SHA-256: ab868a95666ce822f91e8b9759c22049f2a5bd746009374b4c6eea7277ed5560
font_02_sfnt_off00012208.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12208 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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