Malicious PDF — malware analysis report

Static analysis result for SHA-256 748e2d209876ed61…

MALICIOUS

PDF

38.9 KB Created: 2020-08-08 17:17:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b1d212fe6be4f12f441691f5787f84b6 SHA-1: 8bdca0df8267954445252599deb8c97912e32370 SHA-256: 748e2d209876ed61963686c4e041607edfc2629b8c4adee31161e2c28b6c80ec
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, constituting a link farm. One of these URLs, 'https://ttraff.cc/wb?keyword=conventional%20and%20reflective%20morality%20pdf', is identified as a known malicious redirector. The presence of numerous links suggests an attempt to distribute malicious content or engage in SEO manipulation for malicious purposes. No scripts were extracted, but the structure strongly indicates a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.cc/wb?keyword=conventional%20and%20reflective%20morality%20pdf
    • http://files.zoomintojune.com/uploads/1/3/0/8/130873945/272709.pdf
    • http://files.mensshedindooroopilly.com/uploads/1/3/1/8/131856827/narawaru_wumir_fonubonuxa.pdf
    • http://files.tinkscience.com/uploads/1/3/2/7/132740593/599dfda.pdf
    • http://files.melindacochraneauthor.com/uploads/1/3/0/8/130874683/8ff08058f.pdf
    • http://files.belovedcommunitysp.org/uploads/1/3/1/6/131606256/jusulipaterij-wiluzazivu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/5144/1563/files/66932502782.pdf
    • https://cdn.shopify.com/s/files/1/0431/7931/1268/files/xumakupobefaxejuvuko.pdf
    • https://cdn.shopify.com/s/files/1/0429/3866/3079/files/matiwijesizovenetivosavex.pdf
    • https://cdn.shopify.com/s/files/1/0428/3239/6447/files/74534101964.pdf
    • https://cdn.shopify.com/s/files/1/0435/4398/6327/files/18659312556.pdf
    • https://cdn.shopify.com/s/files/1/0436/3033/0016/files/kulezoreneguvevuredavod.pdf
    • https://cdn.shopify.com/s/files/1/0435/7508/3171/files/glencoe_advanced_mathematical_concepts_online_book.pdf
    • https://cdn.shopify.com/s/files/1/0437/9613/6097/files/suvibulokuvutap.pdf
    • https://cdn.shopify.com/s/files/1/0430/8815/0690/files/jemozurugifedup.pdf
    • https://cdn.shopify.com/s/files/1/0432/2315/4847/files/96343353638.pdf
    • https://cdn.shopify.com/s/files/1/0432/7781/1867/files/lowes_festus_mo.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_off00005bd9.bin
eaa8dcba87c18786a0640ba1691a8b2468fa8b9ba011e875a0b397adf7b3d8a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BD9 5188 bytes
font_01_sfnt_off00006d7c.bin
53df208ff625fcf6cf6b25da771fd096b44ff0d0ec7c0c5fa29b97dfe8691ef2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D7C 9680 bytes

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