Malicious PDF — malware analysis report

Static analysis result for SHA-256 7767190b49a3059f…

MALICIOUS

PDF

40.9 KB Created: 2020-08-19 02:53:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78a3276666497d0d35fb81f342143ac6 SHA-1: a490bd3022549c28e1269efe5b3afbdb6bffac0e SHA-256: 7767190b49a3059ff143d339431e4c5f39786e81dec187ba77b2a3925101d716
162 Risk Score

Malware Insights

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

The PDF contains numerous links, including one to a known malicious redirector, suggesting a phishing or scam attempt. The document body and heuristics indicate a lure related to 'fibre cement sheet 6mm', likely intended to trick users into visiting malicious sites. No scripts were extracted, but the presence of embedded URLs and the ML classifier's high confidence score support the malicious verdict.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=fibre+cement+sheet+6mm
    • http://xolak.oldpueblosoapery.com/uploads/1/3/2/6/132682076/rugagafajuzug.pdf
    • http://files.graphicsadp.com/uploads/1/3/2/7/132712268/nebino-fubamuwe-tozetufa-pagut.pdf
    • http://files.quiethouseediting.com/uploads/1/3/0/7/130739535/3067577.pdf
    • http://taxit.fitzgeraldbenhillartscouncil.org/uploads/1/3/2/8/132814930/9428513.pdf
    • http://files.julianoshea.com/uploads/1/3/1/4/131453807/jibumojexoje.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/0873/6927/files/gabobekevolezogunamakamog.pdf
    • https://cdn.shopify.com/s/files/1/0436/9180/2777/files/aga_guidelines_acute_pancreatitis.pdf
    • https://cdn.shopify.com/s/files/1/0429/1588/9305/files/jirabojexugaseloxolajalog.pdf
    • https://cdn.shopify.com/s/files/1/0429/7100/5082/files/mebizisezarifubiwibej.pdf
    • https://cdn.shopify.com/s/files/1/0431/9540/0356/files/vibawifosafiradijebimab.pdf
    • https://cdn.shopify.com/s/files/1/0432/7564/9187/files/android_calendar_icon_show_date.pdf
    • https://cdn.shopify.com/s/files/1/0437/4845/8647/files/santa_maria_craigslist.pdf
    • https://cdn.shopify.com/s/files/1/0435/5047/4399/files/c_for_beginners_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/0306/0128/files/25789824688.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fokukivovasogu.pdf
    • https://cdn.shopify.com/s/files/1/0435/3038/7607/files/fazinugebuwajusaganil.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062f4.bin
525a2d9e413a9ddde365513ef65320dd1a8ec9b6496772915b2387c777f75fcf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62F4 5044 bytes
font_01_sfnt_off000073f4.bin
cd1dee27cc532a2c04a08ed03d03364e1917f1b61b530f83da7f35923dde74f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73F4 10156 bytes

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