Malicious PDF — malware analysis report

Static analysis result for SHA-256 009a5670191f5def…

MALICIOUS

PDF

65.3 KB Created: 2020-08-06 13:42:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a7e8ed21775030daacb614c69cfc363c SHA-1: bcf912f623284db976a748d12bdfc39c61ed1aaf SHA-256: 009a5670191f5def7ba96309cf7167f23eede9678f4b962e419fbf5e798e5839
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass external link farm, with the primary malicious URL being ttraff.ru, which is identified as a known malicious redirector. The document body, though heavily obfuscated, contains the search query 'Bhagavad gita pdf sanskrit english' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of PRC/3D content and ML classification further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PRC/3D content in PDF medium CVE related PDF_PRC_3D
    PDF contains PRC 3D content. PRC/U3D parsers have been a recurring Adobe Reader attack surface; treat as a related parser-exploit indicator rather than a specific CVE match.
  • 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.ru/pify?keyword=bhagavad+gita+pdf+sanskrit+english
    • http://files.marvinsnider.com/uploads/1/3/1/3/131381204/ruzezodosigukelop.pdf
    • http://files.heartspaceherbals.com/uploads/1/3/0/8/130813609/zukusagegixu_nowajefuteza.pdf
    • http://files.bridgescounselingservices.com/uploads/1/3/1/4/131438296/04f50fbcd11a.pdf
    • http://files.srrlsf.com/uploads/1/3/1/3/131380868/4f04903295aa5.pdf
    • http://files.revivalmission.info/uploads/1/3/0/7/130739742/mutonodefozuderopa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0440/6794/6648/files/w3schools_html_tags_list.pdf
    • https://cdn.shopify.com/s/files/1/0432/5598/8374/files/zigozuxas.pdf
    • https://cdn.shopify.com/s/files/1/0434/9391/6837/files/puwijalalunasupitufufo.pdf
    • https://cdn.shopify.com/s/files/1/0431/9910/3136/files/valutamijufonubadot.pdf
    • https://cdn.shopify.com/s/files/1/0432/2384/2978/files/atomic_theory.pdf
    • https://cdn.shopify.com/s/files/1/0428/5258/1542/files/manual_j_hvac.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/minirefotapobizezuloxot.pdf
    • https://cdn.shopify.com/s/files/1/0429/0271/6572/files/lureradin.pdf
    • https://cdn.shopify.com/s/files/1/0437/2529/1674/files/76943705138.pdf
    • https://cdn.shopify.com/s/files/1/0433/3695/8104/files/wazezunovuvubazer.pdf
    • https://cdn.shopify.com/s/files/1/0432/1493/0084/files/shake_your_tail_feather_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0430/4578/1665/files/69323273193.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rowogumidakedodovejizana.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_off0000bbd2.bin
9e1fb3e144636ca66c2f97a9816d5360df3662967fb156322ba6c905b8b8cb7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBBD2 5476 bytes
font_01_sfnt_off0000ce83.bin
5066121f40aeece2a75f70c6dca1ac65e07171a5c71f75dcab272115bff6055e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCE83 12880 bytes

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