Malicious PDF — malware analysis report

Static analysis result for SHA-256 7175e69eff207682…

MALICIOUS

PDF

44.7 KB Created: 2020-07-28 22:26:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c2a8c32ef1a0481194a1ce8ef282fcd SHA-1: 7858ee7dbdd723040fd49a5b1aa06330196d27c4 SHA-256: 7175e69eff20768212014109609b85e95819272773a818607e0ae99625b03cbc
162 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to known malicious redirector infrastructure at ttraff.com. The presence of a "download" button lure and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a phishing or redirection attack.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=convert+small+pdf+to+ppt
    • http://files.schmittbaugnietfamily.com/uploads/1/3/1/4/131437699/lazasijojubiwogemuno.pdf
    • http://files.periodswithpride.org/uploads/1/3/0/8/130814594/febudamosedelobaziro.pdf
    • http://files.wisedemocracy.org/uploads/1/3/0/7/130775952/befepepiji_vinebagotega_fijub_gimevenoxejepe.pdf
    • http://files.windsordoorsales.com/uploads/1/3/1/1/131163620/kivesubikase.pdf
    • http://files.drwalkermoore.com/uploads/1/3/0/7/130775145/3647ae46.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0427/8992/9116/files/xonobidusuvuzikikivekeko.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xifadek.pdf
    • https://cdn.shopify.com/s/files/1/0429/9417/2058/files/86642994747.pdf
    • https://cdn.shopify.com/s/files/1/0430/6989/8914/files/24247214586.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/2128194791.pdf
    • https://cdn.shopify.com/s/files/1/0433/3387/7915/files/42756649920.pdf
    • https://cdn.shopify.com/s/files/1/0429/3469/8147/files/fomofazuxigevotoz.pdf
    • https://cdn.shopify.com/s/files/1/0434/0721/2709/files/96923736223.pdf
    • https://cdn.shopify.com/s/files/1/0429/5757/0207/files/78416749656.pdf
    • https://cdn.shopify.com/s/files/1/0428/9472/1187/files/sokufemerojigenedibesam.pdf
    • https://cdn.shopify.com/s/files/1/0428/4999/2860/files/65387124374.pdf
    • https://cdn.shopify.com/s/files/1/0435/3831/7471/files/lujurufaketi.pdf
    • https://cdn.shopify.com/s/files/1/0432/6971/8182/files/duxawujazuxeni.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_off0000728b.bin
60f98d710a5b6febd2130c516b76ec60f4cc0d0227ac896f20f4a8129a12d680		 pdf-font-stream PDF embedded font (sfnt) at offset 0x728B 5012 bytes
font_01_sfnt_off00008381.bin
d02268cb9b454768a1f305421019cd3fb04c600f0f8e3c4b6cd351fc4373929b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8381 9980 bytes

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