Malicious PDF — malware analysis report

Static analysis result for SHA-256 56516d625c00bf07…

MALICIOUS

PDF

150.3 KB Created: 2020-12-10 12:09:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 03ddd98972ea1edebf6b5f246135238a SHA-1: 10b85094fb1afc6a79f8afb6572550d7b1b98557 SHA-256: 56516d625c00bf07dc950cc0b24880f718d1f1f692f720116f0d8cb1b77fa696
234 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a ClickFix paste-and-run lure and a clipboard-command (paste-and-run) lure. 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 0.9997

Heuristics 6

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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://gettraff.ru/aws?utm_term=windows+batch+scripting+tutorial+pdf In PDF document text
    • https://wefolukozik.weebly.com/uploads/1/3/1/4/131406413/2937554.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501482/normal_5fc648044b5a4.pdfIn PDF document text
    • https://lesofetu.weebly.com/uploads/1/3/1/3/131378838/5f71e0a64b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381291/normal_5fa449591b574.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc660b9c6229360ecd248cd/t/5fc765bead3e64119245d6e5/1606903231350/1754353934.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/felilupezesivekikapig.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc14640df132613bbc04837/t/5fc8ded17ff5a343ebffd61b/1606999763767/clash_of_clans_generator_2020.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc11362403f5353fd96c027/t/5fc88e5fdcb5b260797f0023/1606979168323/41528439919.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc50c986b97992eb5766a10/t/5fc63faf3c6ccf69f333b68b/1606827952199/fall_guys_ultimate_knockout_mod_apk_android_1.pdfIn PDF document text
    • https://s3.amazonaws.com/mutirexa/zujix.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe35e23c02f22b9dd8827a/1606301162516/23435924099.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/autumn_leaves_live_wallpaper_hd_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/patotale/iccid_nummer_auslesen_android.pdfIn PDF document text
    • https://s3.amazonaws.com/lomogas/16043605870.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_off00020d6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20D6B 5664 bytes
SHA-256: aaf96069f5480eabb2201827869dee061c255f9b2ef9fa43d383285d7b42323d
font_01_sfnt_off000220c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x220C7 12332 bytes
SHA-256: 9f56ec7153a3251300ef0df0ccc290bf2413cbe7393accb4556f4a6e91dfc80a

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