Malicious PDF — malware analysis report

Static analysis result for SHA-256 44fc7d6b65c8606f…

MALICIOUS

PDF

42.1 KB Created: 2020-08-09 02:12:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bf1a33ecd4393cf8874a58a9d9885bb2 SHA-1: b3cea35fcf7872ece725f3d12ef5e8516161c659 SHA-256: 44fc7d6b65c8606fe348cd45e0a064b5a53c514e7369da37f3f01d3ab01c0db1
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=formulaire+aide+m%25C3%25A9dicale+d+%25C3%25A9tat+pdf'. This URL is likely part of a phishing campaign or a malware distribution chain. The document body, though heavily obfuscated, also contains this URL and other embedded links, reinforcing the malicious intent. The presence of a PDF link farm further suggests an attempt to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=formulaire+aide+m%25C3%25A9dicale+d+%25C3%25A9tat+pdf
    • http://files.airpro-1.com/uploads/1/3/1/3/131379443/javixaxur.pdf
    • http://files.nicoleianuzelli.com/uploads/1/3/1/3/131380814/zusemotut_firafivufutufig_bitegom.pdf
    • http://files.hixon50.com/uploads/1/3/1/4/131438353/foradirapux.pdf
    • https://cdn.shopify.com/s/files/1/0432/2063/1720/files/53971297619.pdf
    • https://cdn.shopify.com/s/files/1/0437/0631/9001/files/7858393799.pdf
    • https://cdn.shopify.com/s/files/1/0431/9870/9918/files/css_z-_index.pdf
    • https://cdn.shopify.com/s/files/1/0446/6681/4617/files/cambridge_advanced_expert.pdf
    • https://cdn.shopify.com/s/files/1/0435/5653/6471/files/nuradi.pdf
    • https://cdn.shopify.com/s/files/1/0432/9157/4430/files/body_systems_worksheets_high_school.pdf
    • https://cdn.shopify.com/s/files/1/0431/2639/0933/files/how_to_extract_audio_from_video.pdf
    • https://cdn.shopify.com/s/files/1/0434/1425/7815/files/dark_souls_2_pc_save_editor.pdf
    • https://cdn.shopify.com/s/files/1/0430/7641/9744/files/rixuvovoxamazinevipemu.pdf
    • https://cdn.shopify.com/s/files/1/0428/2623/6063/files/dububivokezubibez.pdf
    • https://cdn.shopify.com/s/files/1/0431/4667/4337/files/wosemixezemotixo.pdf
    • https://cdn.shopify.com/s/files/1/0435/2117/9816/files/92807423060.pdf
    • https://cdn.shopify.com/s/files/1/0435/9880/7202/files/almagesto_ptolomeu.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_off0000625c.bin
3742ae7be1d14e90cbc41a8b4419ad851e647f6fa6a7d300e71e0f3feb770ce9
pdf-font-stream PDF embedded font (sfnt) at offset 0x625C 5220 bytes
font_01_sfnt_off000073c2.bin
7df476d3f37ce5fef45f9c86007573ccf02d53d1055100b8b082a8e430079a71
pdf-font-stream PDF embedded font (sfnt) at offset 0x73C2 11912 bytes