Malicious PDF — malware analysis report

Static analysis result for SHA-256 09013508560a6cf4…

MALICIOUS

PDF

46.8 KB Created: 2020-08-15 07:17:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab59cb73b8cb3e79c93bca7b74441a6b SHA-1: f295aa9d455ab82f083b5608948cfb7348ca364b SHA-256: 09013508560a6cf4d212d7325052098a2bc883ba6a4107edd1a154a6e30fbf9c
242 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious intent, including a critical redirector link and a lure to install a browser extension. The document body and embedded links suggest a social engineering tactic to trick the user into visiting a malicious URL, likely for credential harvesting or malware distribution. The presence of numerous PDF links, some pointing to benign Shopify domains and others to unknown hosts, further supports a link farm or redirection strategy.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://ttraff.com/pify?keyword=angular+blob++not+working+in+ie
    • http://files.hamptonplaceclt.com/uploads/1/3/1/3/131380845/zewafogukepa.pdf
    • http://files.ethnographica-consulting.com/uploads/1/3/1/4/131437306/687d90dd4bc9b7d.pdf
    • http://files.wallacesmithphotography.com/uploads/1/3/1/3/131380995/b0d07774cde.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/5652/9565/files/banowelowukinawidi.pdf
    • https://cdn.shopify.com/s/files/1/0435/1488/8360/files/zujesipamuxudewe.pdf
    • https://cdn.shopify.com/s/files/1/0440/3914/3574/files/zumoki.pdf
    • https://cdn.shopify.com/s/files/1/0430/6586/8437/files/vagatufegivosupogidubewo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8025/3593/files/7080505949.pdf
    • https://cdn.shopify.com/s/files/1/0433/3345/1926/files/62940029427.pdf
    • https://cdn.shopify.com/s/files/1/0436/4694/3392/files/pen_drive_bootable_cmd.pdf
    • https://cdn.shopify.com/s/files/1/0438/2189/1746/files/wrt54g2_firmware_updates.pdf
    • https://cdn.shopify.com/s/files/1/0431/5974/8769/files/ibps_rrb_notification_2020_apply_online.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fonufefijosogigu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8363/6644/files/sanyo_television_repair.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/
    • https://cdn.shopify.com/s/files/1/0438/2189/1746/fil
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006dd4.bin
6673adda19dcd005375a97e15a8b12714d67f4875306571a246149b250688763		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD4 4960 bytes
font_01_sfnt_off00007ed6.bin
28a4a625b87235e0b8d1dd74ce60f715c63d0560bf8fb8570f59908e67645fcf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7ED6 15292 bytes

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