Malicious PDF — malware analysis report

Static analysis result for SHA-256 587af651716f432d…

MALICIOUS

PDF

74.9 KB Created: 2021-02-28 20:29:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: faf57ee2018aa978a223d6fbb49099e2 SHA-1: 597ad674292747cbf19a08189008545a20138973 SHA-256: 587af651716f432d5a2a9a6a2cbc933b50a94c7e5115c0b9afd59adf470f1685
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a significant number pointing to potentially malicious domains, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. While no scripts were directly extracted, the embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://midufefew.ru/wix?keyword=spring+garden+spa+groupon PDF link annotation
    • http://wogivodugakovek.mygamesonline.org/lafejefuvumizonofo.pdfIn PDF document text
    • https://moxuronanupew.weebly.com/uploads/1/3/4/5/134597487/lesuzesojep.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500208/normal_5fce84e88168c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465388/normal_60125f5de20de.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415537/normal_5ff6019fb4c00.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381081/normal_5ff8af7318b67.pdfIn PDF document text
    • http://jolixasij.sportsontheweb.net/fasofoxigatafis.pdfIn PDF document text
    • https://lapedegino.weebly.com/uploads/1/3/4/6/134689006/7285434.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/setikizo/net_exam_dec_2018_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/farowug/wulezevopomoro.pdfIn PDF document text
    • https://s3.amazonaws.com/daxemo/automatic_clicker_apk_android_5._1._1.pdfIn PDF document text
    • https://s3.amazonaws.com/figugipopar/segavitufominudizala.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/weed_eater_featherlite_xt200_fuel_line_replacement.pdfIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/converting_decimals_to_fractions_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/taturi/kuta_software_infinite_algebra_2_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/9215628639.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_off0000e9d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9D5 5200 bytes
SHA-256: 5d1d6e1f3c8bdd39deba93404a5cb12453b2ccb2c31fcdc080343697034cf7bd
font_01_sfnt_off0000fb8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB8D 10364 bytes
SHA-256: 90308f069f84fdd69d10760b3aeb2c35a1f88bd6f4fc7c94c109bc76859765e0

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