Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e5688a1c0fbdda5…

MALICIOUS

PDF

41.9 KB Created: 2020-08-08 15:01:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 393fab98a21343c2baf99daa5551494b SHA-1: 65ae37ee4d4eb6c93de34c5c780cd75ac0c5fb0f SHA-256: 7e5688a1c0fbdda527aa484ab96d0fc94345927091af37fd7bd1cdd92134fe79
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'resistance band exercises' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The ML classifier strongly flagged this PDF as malicious.

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.com/pify?keyword=resistance+band+exercises+for+legs+and+glutes+pdf
    • http://files.commongroundcommunitycenter.org/uploads/1/3/0/7/130775951/e02bbaa.pdf
    • http://files.kennethdeheve.com/uploads/1/3/0/7/130775299/79d77.pdf
    • http://files.thewardroom.co.nz/uploads/1/3/1/0/131070911/c7d0c8f3c.pdf
    • http://files.acemexam.org/uploads/1/3/1/4/131483083/radizafomijuwu-vifoxurux.pdf
    • http://files.heartofillinoisorff.org/uploads/1/3/1/3/131379371/9586210.pdf
    • https://cdn.shopify.com/s/files/1/0434/1547/0245/files/nowuponereruvezul.pdf
    • https://cdn.shopify.com/s/files/1/0438/2582/3904/files/igcse_article_writing_examples.pdf
    • https://cdn.shopify.com/s/files/1/0428/7581/4047/files/45768067195.pdf
    • https://cdn.shopify.com/s/files/1/0428/6034/7551/files/importance_of_learning_by_doing.pdf
    • https://cdn.shopify.com/s/files/1/0433/8611/0110/files/jadewugom.pdf
    • https://cdn.shopify.com/s/files/1/0431/9831/6707/files/kekuvutokiloleximadag.pdf
    • https://cdn.shopify.com/s/files/1/0434/0098/6787/files/administracion_de_empresas_turisticas_nuevas_estrategias.pdf
    • https://cdn.shopify.com/s/files/1/0433/7729/5516/files/playboy_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/9067/3813/files/48667590238.pdf
    • https://cdn.shopify.com/s/files/1/0433/1077/6473/files/46095236947.pdf
    • https://cdn.shopify.com/s/files/1/0432/8026/9477/files/46728995902.pdf
    • https://cdn.shopify.com/s/files/1/0428/8937/9993/files/32584943195.pdf
    • https://cdn.shopify.com/s/files/1/0431/7646/0445/files/xelutuxiweromifovimiju.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065d5.bin
df4bd53c268c285d61b0a3b2fd1eab4958e51de85df6cc7f0343e8f822e0cb24		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65D5 5536 bytes
font_01_sfnt_off000078bc.bin
45e03116edacb59d539fafa9b4d536d1f85404c307a03c40880b03e3b378ae87		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78BC 9848 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.