Malicious PDF — malware analysis report

Static analysis result for SHA-256 89218169fe35223a…

MALICIOUS

PDF

86.7 KB Created: 2021-04-21 11:54:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 8532dec11590ab26899fe923672b4865 SHA-1: dc7d0ab8912abd8fa53aa4adcb49785f0466a888 SHA-256: 89218169fe35223a31295ef9f1310202aff13677cdb341b76be4df01dc6c2766
154 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • 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://yafferge.ru/strik?utm_term=what+is+the+highest+paying+job+in+the+game+of+life In PDF document text
    • http://azakalaza5.xyz/6196806920160gcn.pdfIn PDF document text
    • https://cdn.sqhk.co/ziriziwebu/Xmjaifs/national_test_abhyas_review.pdfIn PDF document text
    • http://it50disconto.info/tawaxajtwxa5.pdfIn PDF document text
    • http://creditstar-kabinet.com/zetawec34q.pdfIn PDF document text
    • https://cdn.sqhk.co/niminililez/Pwggajd/dejunikarolinub.pdfIn PDF document text
    • http://lalashoppen.online/53534508358488nv.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/dudigonifu/apc_smart_ups_3000_xli_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d7d963d-62a7-4e2b-ba48-8cc79a55579d/schwinn_spin_bike_ic3_amazon.pdfIn PDF document text
    • http://mijemem.rf.gd/juxuxisigatitetedovowam.pdfIn PDF document text
    • https://s3.amazonaws.com/kudowo/566663897.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cccb874f-6b9d-4cd0-93e5-d3472dc08414/msc_biochemistry_questions_and_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e11b9ec4-791c-4670-9819-3aac8fdf01ba/asus_laptop_q550lf_drivers.pdfIn PDF document text
    • http://nixikivike.epizy.com/coordinate_geometry_formulas_download.pdfIn PDF document text
    • https://s3.amazonaws.com/muvemasoxaji/autodesk_viewer_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/nawosineromigi/sound_effect_free_swish.pdfIn PDF document text
    • https://s3.amazonaws.com/jazuravazaguz/dozodor.pdfIn PDF document text
    • http://gizexagivet.rf.gd/chapter_14_the_cardiovascular_system_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/jejulurowev/miss_fortune_build_guide_s9.pdfIn PDF document text
    • http://duzatip.rf.gd/98035890276.pdfIn PDF document text
    • http://nunowezowijoper.rf.gd/dyson_v10_animal_plus_cordless_vacuum_reviews.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_off00011212.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11212 5548 bytes
SHA-256: 22d89f481164e71945db26c19c98ec7b399c774c0a3bbe89222d46a06e892352
font_01_sfnt_off000124ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124EE 11308 bytes
SHA-256: 86addafea464510fd34faf9dca3d5e4b03ed62f80ff5a11690422f0a1cdd7053