Malicious PDF — malware analysis report

Static analysis result for SHA-256 4dc1d0368d7cf472…

MALICIOUS

PDF

90.6 KB Created: 2021-03-28 17:48:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 740d6782ff9caa20ff1bc01bc9020254 SHA-1: 227a1b02710706c9f24d4716c8690a2a8a9fc23b SHA-256: 4dc1d0368d7cf4728d99ea00b562e36a209008b8ad689b114b2a53f0b11e1929
96 Risk Score

Malware Insights

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

The file was detected as a malicious PDF by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains multiple embedded URLs that likely lead to malicious sites, suggesting an attempt to redirect the user for further compromise. The presence of PDF_URI and EMBEDDED_URL heuristics confirms the malicious intent to leverage external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://golowaki.ru/123?utm_term=alarmmanager+not+working+on+android+6.+0 PDF link annotation
    • http://hookup682.site/55528357307qwshr.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407777/normal_5ff0785fc1589.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451374/normal_6020269a0bb46.pdfIn PDF document text
    • http://zoomita.fun/alamofire_multipart_form_data_string95xvs.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445880/normal_5fe2597e02095.pdfIn PDF document text
    • http://termometr-medikal.site/72029695457qjgd5.pdfIn PDF document text
    • http://udilische.club/goliwatoxizode0j5p.pdfIn PDF document text
    • https://cdn.sqhk.co/nodewanase/chgoLgg/likee_app_download_uptodown.pdfIn PDF document text
    • http://axecheat7.xyz/inspire_award_guidelines_20195sl8c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494891/normal_5ff936c09ef7f.pdfIn PDF document text
    • http://viteroludobano.mypressonline.com/13040071938.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502563/normal_5ffcd9aa2f439.pdfIn PDF document text
    • https://cdn.sqhk.co/wadupaxi/ihjgfja/nidelafosubi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469378/normal_604fc0f3c5c3f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377931/normal_601372bfdc2c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417670/normal_605fdb57013d8.pdfIn PDF document text
    • http://jolovomolosubi.getenjoyment.net/9625422135.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484804/normal_5fc6665c9c4ca.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/xukanomarexumu/14030880016.pdfIn PDF document text
    • https://s3.amazonaws.com/kodipopujufipig/81523220472.pdfIn PDF document text
    • http://jaxunukologefis.onlinewebshop.net/remington_1100_synthetic_stock.pdfIn PDF document text
    • https://s3.amazonaws.com/farefasejikap/bleacher_report_wwe_nxt_takeover_grades.pdfIn PDF document text
    • https://s3.amazonaws.com/wutogugej/tenuwikadepudupurimetowa.pdfIn PDF document text
    • https://s3.amazonaws.com/lixasifasi/lirik_lagu_ayah_dangdut.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_off00012751.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12751 5440 bytes
SHA-256: 878728fdb0bc366de243ea5743633157ccd4c5cf048174911dbe62ea230130f0
font_01_sfnt_off000139d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x139D4 10220 bytes
SHA-256: 7fb8b513b0588deae83bf77590716c373f4307ea5af9ad78c538b50b754defe2

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