Malicious PDF — malware analysis report

Static analysis result for SHA-256 d34e7b9419771a17…

MALICIOUS

PDF

80.5 KB Created: 2021-02-25 17:46:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 2717ebc62860f926e4877f62bc72349b SHA-1: fc34e4706e3948e9889578fe4c06f63781d5b67e SHA-256: d34e7b9419771a17bdef92b43c435bc805acda1b8165aabe3e6a2939c051fff9
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, disguised as a printer driver download. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. While no scripts were directly extracted, the PDF structure and embedded URL suggest an attempt to trick the user into downloading a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://jottigo.ru/123?utm_term=samsung+xpress+m2835dw+printer+driver PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4501503/normal_602d6beb276d3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503035/normal_6005925310535.pdfIn PDF document text
    • http://pofaduxiruk.getenjoyment.net/robin_hood_movie_2018_actors.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465935/normal_6036fc8dd7ded.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444853/normal_602f478529ec4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391340/normal_5feb02be473e8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413373/normal_5ffbaea55088f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383704/normal_6031749d81ab5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sutexuvidag.myartsonline.com/96624142036.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/kerboodle_answers_ocr_chemistry.pdfIn PDF document text
    • https://s3.amazonaws.com/xoferuzu/zafidolilo.pdfIn PDF document text
    • http://bitines.myartsonline.com/r_programming_language_tutorial_ppt.pdfIn PDF document text
    • https://s3.amazonaws.com/jiguwuzobozobaz/tuxitobiwidetanijokodazo.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/balance_sheet_accounts_section.pdfIn PDF document text
    • https://s3.amazonaws.com/wexukufedepim/violin_bridge_template.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_off0000fbbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBBC 6184 bytes
SHA-256: 5aefb3dbe4fce5cd619108e720257a3d431a0af48984996786272735a2e0483d
font_01_sfnt_off000110c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110C4 10512 bytes
SHA-256: dc2ccb1e7851de165972ed7dc68aaf474558a78ee2918c446bec1350bc18ee48

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