Malicious PDF — malware analysis report

Static analysis result for SHA-256 00ec846eab0cb68b…

MALICIOUS

PDF

75.6 KB Created: 2020-11-24 04:52:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 884901173e4b285fcb566182aca0fcb9 SHA-1: d187a695fbda1c4f76eacbe34912a31721cff8b3 SHA-256: 00ec846eab0cb68b5262acbd1a878ea0622a47074a9ae9ac780134fe77c3f94b
302 Risk Score

Malware Insights

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

This PDF file exhibits multiple indicators of malicious activity, including a critical rating for linking to known malicious redirector infrastructure and a high ML classifier score. The document employs social engineering tactics, specifically a 'ClickFix' lure, by instructing the user to press Win+R or paste commands into a terminal, likely to bypass macro restrictions and execute a payload. The presence of embedded URLs and the heuristic firings suggest the document's primary purpose is to trick the user into downloading and executing a second-stage malicious file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 8

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • 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://gettraff.ru/strik?utm_term=descargar+pro+53+vst
    • https://mepogazab.weebly.com/uploads/1/3/4/5/134501519/85936ffb69.pdf
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/09b03b.pdf
    • https://butiziro.weebly.com/uploads/1/3/4/3/134308177/texopifunal_menegojugolodo_navodoxojoroxu.pdf
    • https://wajodaxomunav.weebly.com/uploads/1/3/4/6/134625674/1344204.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.fontrix.comhttp://www.nhncorp.com
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/kozibowisenatu/laxalajujogerom.pdf
    • https://s3.amazonaws.com/vipinib/13095221434.pdf
    • https://uploads.strikinglycdn.com/files/ce9647a7-5864-4bc1-96b2-15fb789ebf2e/mapa_de_warhammer_fantasy.pdf
    • https://s3.amazonaws.com/likadojivivofu/bhula_na_sakoge_dj_video_song.pdf
    • https://s3.amazonaws.com/divelikubapiwaj/lepofegakev.pdf
    • https://s3.amazonaws.com/vavebufevodutob/cash_app_support_number.pdf
    • https://uploads.strikinglycdn.com/files/d0cefda7-982d-45a1-bcf5-1f51ecb673df/30818740834.pdf
    • https://s3.amazonaws.com/gogoxowiniza/zudavuzugireruwupuxu.pdf
    • https://s3.amazonaws.com/toguvaju/black_friday_movie_songs_free.pdf
    • https://s3.amazonaws.com/nazekisigiduz/vanizizufavato.pdf
    • https://s3.amazonaws.com/jiwisigetizoxif/68758920913.pdf
    • https://s3.amazonaws.com/pazifetanegapu/92185547724.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d219.bin
a2a09d6ce48a265b7098a8131610d17c43d9590bcf46aa59cfbc6e873ca47e56		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD219 5048 bytes
font_01_sfnt_off0000e364.bin
4b6459af7c28cae61497a340ddea6402864ead925a5f3707c3632b29cc14c36a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE364 11340 bytes
font_02_sfnt_off000109ef.bin
8e030c7efcba7ca688ebe84e8ae2699fe277cc278b1c95d7e8e55da296be5105		 pdf-font-stream PDF embedded font (sfnt) at offset 0x109EF 2072 bytes
font_03_sfnt_off000112b9.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x112B9 4324 bytes

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