Malicious PDF — malware analysis report

Static analysis result for SHA-256 802b2c5054327be8…

MALICIOUS

PDF

107.5 KB Created: 2020-11-01 07:11:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 61558a1fea73d443e225d96850aba59f SHA-1: bcf4d8e67cefd1755898c717609bb45583d567ae SHA-256: 802b2c5054327be8376799e66cf61953ee186ff02852bb2aa3e5e078ad365b8d
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 an ML classifier. It uses an urgency-based lure. The file embeds a large number of external links characteristic of an SEO link farm and 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 1.0000

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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?keyword=george+jones+wife+nancy+age In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/eede66de-b194-4f2d-9520-3bd9253920da/ruvowunumisexavafepuxot.pdfIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/viking_cheerleaders_swimsuit_calendar.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/galacticraft_moon_dungeon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7022/5558/files/fukivixakejiduvigixibegu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/7481/7693/files/wulivewagip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/8595/4716/files/ninja_school_offline_hack_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/6811/9976/files/wazogarokafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5827/3183/files/henry_madden_library_starbucks_hours.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f28f5fa0-4e63-47d3-916c-74b644523b4b/54671112222.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18b835d2-8e5a-4cc3-848d-c74ee1a03bf3/partituras_corales_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4954/7936/files/7724029271.pdfIn PDF document text
    • https://s3.amazonaws.com/kelukakeb/xosuvaromufewobujabudug.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off00016f0d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x16F0D 27764 bytes
SHA-256: 3397bbecd8190c2123346416212760afcb29844f22e4898c36bde8ce34ae7e01
font_00_sfnt_off000135b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135B6 5316 bytes
SHA-256: ae08fc5b78274a70a2ee422773dd4cd7ffdc064eeb12b251deaea012a202d78a
font_01_sfnt_off00014800.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14800 11392 bytes
SHA-256: cc3cc12a732f6f63a1bfa964f21c4593c97ac3a5ecfb48f4bf19814c4ef8db34

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