Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b8cf40999918022…

MALICIOUS

PDF

153.8 KB Created: 2020-08-10 22:49:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 461d4f411fcc8cc171dd2343ecdb7528 SHA-1: 6ee64f277a9175d04eef45ffabe71e3da509a6b7 SHA-256: 5b8cf4099991802257a15f8c8ccfb3d3ff6e98a99fcab70865f20c097a1b68ba
94 Risk Score

Malware Insights

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

The PDF was flagged as malicious by an ML classifier and contains a link to a known malicious redirector. The embedded URL 'https://ttraff.com/pify?keyword=12+dynamic+bible+study+methods+pdf' is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware download page. No scripts were extracted, but the PDF structure itself facilitated the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • 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.
  • 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=12+dynamic+bible+study+methods+pdf
    • http://files.andreaperno.com/uploads/1/3/1/0/131071056/7176474.pdf
    • http://xatofepip.southtawton.co.uk/uploads/1/3/1/8/131871699/4cc8500.pdf
    • http://files.co-oplink.net/uploads/1/3/0/8/130813509/nonasojud.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/6799/8362/files/5826851046.pdf
    • https://cdn.shopify.com/s/files/1/0427/3229/0215/files/tunijuxuvaxazutaxopal.pdf
    • https://cdn.shopify.com/s/files/1/0432/5857/7064/files/giwupezuvijeferibatisomip.pdf
    • https://cdn.shopify.com/s/files/1/0431/6839/9524/files/52255922896.pdf
    • https://cdn.shopify.com/s/files/1/0438/1471/5549/files/amrutanubhav_granth.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tovunegorudakumuwi.pdf
    • https://cdn.shopify.com/s/files/1/0432/0441/1556/files/83007021219.pdf
    • https://cdn.shopify.com/s/files/1/0440/5608/4630/files/49481678565.pdf
    • https://cdn.shopify.com/s/files/1/0430/9811/2167/files/64097559856.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bewewolifokolugetu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5581/6608/files/59756900641.pdf
    • https://cdn.shopify.com/s/files/1/0432/6499/9590/files/bavasovafupi.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_off00022176.bin
2f1d67cf71986b7a40fb424298a5e13e352fcea78d44dcb40efbee75c615efba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x22176 5632 bytes
font_01_sfnt_off00023476.bin
74a247c24fdbf2af5ea77502f1b706efeca4709aeea6411b8bba9dd8001c3d02		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23476 10808 bytes

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