Malicious PDF — malware analysis report

Static analysis result for SHA-256 e15c0bc3ea2da1b0…

MALICIOUS

PDF

82.0 KB Created: 2021-03-25 13:28:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 683e21fb6af2d3e2ce1135ccf810b71c SHA-1: 37d5e0d6a3afa9ef3bcd7055647732eb6e1e2407 SHA-256: e15c0bc3ea2da1b05d45b11d08039d43bf1f9c336417d2bb4088e6e5694fdf04
162 Risk Score
Tags
free-cdn-ebook-manual-lure

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 and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/123?utm_term=joyous+celebration+5+music In PDF document text
    • https://cdn.sqhk.co/dodufiruw/chjjfgg/tevesufatexevun.pdfIn PDF document text
    • https://cdn.sqhk.co/bewiviki/ijDnjjA/atmega16-_16pu_datasheet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470828/normal_600b8d39e67b9.pdfIn PDF document text
    • http://zunowugijose.22web.org/xasimasigasumemasapujova.pdfIn PDF document text
    • http://wikowezenitezo.medianewsonline.com/automatic_control_theory.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374847/normal_600737a7cb6f9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407085/normal_5ff7e291474d9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374368/normal_603e56642fc6a.pdfIn PDF document text
    • http://lituxupov.iblogger.org/nubimejujavikudi.pdfIn PDF document text
    • https://cdn.sqhk.co/kokademesuz/fhMicJ3/lukozejekurifen.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421768/normal_5fcf2371ba412.pdfIn PDF document text
    • https://cdn.sqhk.co/gufulixofoma/dgfyjhL/vitudesojera.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/xakajoziwibi/what_does_a_six_sigma_black_belt_make.pdfIn PDF document text
    • https://s3.amazonaws.com/jefazaxal/briggs_and_stratton_625ex_oil.pdfIn PDF document text
    • https://s3.amazonaws.com/setigafat/black_dolls_matter.pdfIn PDF document text
    • http://zikoliduxa.atwebpages.com/tigadajobitene.pdfIn PDF document text
    • http://jinesiwi.epizy.com/budesonide_and_formoterol_fumarate_dihydrate_classification.pdfIn PDF document text
    • https://s3.amazonaws.com/pizivurapab/bubbly_ukulele_chords.pdfIn PDF document text
    • http://jemileti.atwebpages.com/8866325441.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_off0001029d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1029D 5300 bytes
SHA-256: 7fbe190c9e7900e11089ddcc25e7ddc0e0bc30988b3d3cd8d729a8b5a4400937
font_01_sfnt_off00011498.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11498 11848 bytes
SHA-256: 6c59019a63d750ea7c5905c307b87ba358461b5ad5c26d45aaf680582b77edf8

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