Malicious PDF — malware analysis report

Static analysis result for SHA-256 88054524bcbd8353…

MALICIOUS

PDF

44.2 KB Created: 2020-08-25 14:24:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 53a322bcbebafe8779946f0c22505df4 SHA-1: 601dc90fcf21b508170a1f5284854dbd28d1de4c SHA-256: 88054524bcbd8353c143d28405b70f21796301c30ded84c1c616918e3e343893
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely intended to lead the user to a malicious download or phishing page. The document body also contains numerous links to external PDFs hosted on various domains, suggesting a link farm or SEO poisoning attempt to drive traffic to malicious content. The ML classifier strongly indicates maliciousness.

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/pify?keyword=blender+3d++crackeado
    • http://files.nwarkansashomeguide.com/uploads/1/3/0/7/130776655/bazoke.pdf
    • http://jakofijen.swdcollections.com/uploads/1/3/1/6/131637459/jener.pdf
    • http://sarax.backcountryhunters.ca/uploads/1/3/1/8/131856158/daxisebuwoxok.pdf
    • http://files.sammyspetfoods.com/uploads/1/3/1/3/131380641/vevizuvonutuvimopebo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/lodanaxepevewirobomus.pdf
    • https://cdn.shopify.com/s/files/1/0431/7023/4519/files/alt_j_taro_free.pdf
    • https://cdn.shopify.com/s/files/1/0443/9041/6550/files/best_reader_android_night_mode.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8095/files/lalovokuxarapawemep.pdf
    • https://cdn.shopify.com/s/files/1/0434/1537/1932/files/ffxiv_shadowbringers_ost.pdf
    • https://cdn.shopify.com/s/files/1/0432/2767/6829/files/nesakubivuko.pdf
    • https://cdn.shopify.com/s/files/1/0432/3393/5519/files/apprendre_le_coran_en_franais.pdf
    • https://cdn.shopify.com/s/files/1/0438/9571/8040/files/74727445648.pdf
    • https://cdn.shopify.com/s/files/1/0432/4343/8244/files/jegexakoxosuxanibij.pdf
    • https://cdn.shopify.com/s/files/1/0432/4130/8320/files/angry_birds_transformers_apk_mod_2019.pdf
    • https://cdn.shopify.com/s/files/1/0432/2210/6271/files/que_es_el_aneurisma.pdf
    • https://cdn.shopify.com/s/files/1/0432/6467/1909/files/xufobexotixarata.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006636.bin
fae3a01727eaafd993807ee1ddfb16bdb3278fffa0c7238e7280ea9c3d87930b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6636 5032 bytes
font_01_sfnt_off00007751.bin
accaceeb33bfc6e1bd405ccf38ad3f293e5702f423aa179c28c4c144154b86ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7751 1952 bytes
font_02_sfnt_off000080b7.bin
11ea2f13505a62a304a306fd361ce3830d7c99b70a63814407d074b0f4adf8f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80B7 10336 bytes

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