Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1d76e03633e9068…

MALICIOUS

PDF

45.5 KB Created: 2020-08-01 16:13:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cb3e2da8f3774958652332ce7ee8e881 SHA-1: 24b5d529a608fd8f3dd0f9770b22889b6c0f0d56 SHA-256: b1d76e03633e9068ee288ba7c9bea71f6e5d6a698686dd51fdf89575e11583c0
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Bowflex work out routines' and the malicious URL, suggesting a lure to a phishing or scam page. The presence of a link farm further indicates malicious intent. No scripts were extracted, limiting the analysis of direct payload execution.

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=bowflex+work+out+routines
    • http://files.tottenfamilyfarm.com/uploads/1/3/1/6/131606268/pafixiben-jaselozi-gonenugiwese.pdf
    • http://files.nolimitslearning.net/uploads/1/3/2/6/132682785/9849602.pdf
    • http://files.leapingllamas.com/uploads/1/3/2/3/132303337/4868565.pdf
    • http://files.johannadunaway.com/uploads/1/3/0/7/130776639/tubanasipemede.pdf
    • https://cdn.shopify.com/s/files/1/0432/0159/3502/files/81404865677.pdf
    • https://cdn.shopify.com/s/files/1/0433/5114/6650/files/jekudoxujopobizeku.pdf
    • https://cdn.shopify.com/s/files/1/0440/8007/0808/files/bimipup.pdf
    • https://cdn.shopify.com/s/files/1/0436/3298/4222/files/81131719693.pdf
    • https://cdn.shopify.com/s/files/1/0428/7053/8406/files/62565309136.pdf
    • https://cdn.shopify.com/s/files/1/0434/8765/8141/files/9960108282.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xoxolesusoziviro.pdf
    • https://cdn.shopify.com/s/files/1/0428/1974/8006/files/sawimebapireferib.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/12729031526.pdf
    • https://cdn.shopify.com/s/files/1/0431/0522/2822/files/28447017037.pdf
    • https://cdn.shopify.com/s/files/1/0431/2354/0124/files/15392055757.pdf
    • https://cdn.shopify.com/s/files/1/0434/9090/2166/files/49219095790.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066f2.bin
916d165c58a18ef2c7fc76b5e001b256569284a914b5a19c12d25b13e31b667f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66F2 4708 bytes
font_01_sfnt_off00007721.bin
b5a8e8e5681fcfd3a92e432ae3bec72247a66bfbf99462189f53bdd89e8fd4eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7721 10540 bytes
font_02_sfnt_off00009b17.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B17 4324 bytes

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