Malicious PDF — malware analysis report

Static analysis result for SHA-256 76aae012a188a474…

MALICIOUS

PDF

88.2 KB Created: 2021-01-14 02:43:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 486e354e19b36af0e34ce01ad74825da SHA-1: b70df20672d265a357ace0341a73a4289c70bccb SHA-256: 76aae012a188a4745ec1fc47cdc7ccc9dbbce5d9cad5b202371e3cddb832edde
154 Risk Score

Malware Insights

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

The PDF contains embedded URLs that point to known malicious redirector infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier and ClamAV also flagged this file as malicious. The primary malicious URL identified is https://ggtraff.ru/123?utm_term=san+andres+y+providencia, which is likely used to lure victims into clicking through to a phishing or malware-hosting site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ggtraff.ru/123?utm_term=san+andres+y+providencia In PDF document text
    • https://cdn.sqhk.co/kifuzopeko/euDjdnK/kunajivopoxo.pdfIn PDF document text
    • https://site-1193591.mozfiles.com/files/1193591/29366018671.pdfIn PDF document text
    • https://site-1178690.mozfiles.com/files/1178690/41277108972.pdfIn PDF document text
    • https://cdn.sqhk.co/vuwonesi/hhwhh8p/figivipinor.pdfIn PDF document text
    • https://site-1172574.mozfiles.com/files/1172574/finger_family_video_song_world_finger_family_collection.pdfIn PDF document text
    • https://site-1168027.mozfiles.com/files/1168027/77321652078.pdfIn PDF document text
    • https://site-1173706.mozfiles.com/files/1173706/translate_voice_translator_pro_1__1_0_apk.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/zagubip/android_10_nokia_update.pdfIn PDF document text
    • https://s3.amazonaws.com/mupukesunobaga/fozotunitenogo.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuduwonifa/nugawevedibiw.pdfIn PDF document text
    • https://s3.amazonaws.com/falufusu/30498555617.pdfIn PDF document text
    • https://s3.amazonaws.com/sezutuma/bu_de_bu_ai.pdfIn PDF document text
    • https://s3.amazonaws.com/gafedupeba/97897885551.pdfIn PDF document text
    • https://s3.amazonaws.com/gebukil/housefull_4_day_8_occupancy_report.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/46729711059.pdfIn PDF document text
    • https://s3.amazonaws.com/mutirexa/schneider_electric_vfd_atv312hu15n4_manual.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_off00010fcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FCF 5008 bytes
SHA-256: 538797238ddf72aa8eed1abd20e8a8d0caf94a933368108e73331a4e050a765a
font_01_sfnt_off000120d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120D5 10720 bytes
SHA-256: 8f0d06fdef5461ccb84e65806365c6ba699f07a59ffef68627b9b76b7b096cba
font_02_sfnt_off00014497.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14497 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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