Malicious PDF — malware analysis report

Static analysis result for SHA-256 2142921ef46d8658…

MALICIOUS

PDF

64.9 KB Created: 2020-08-05 03:58:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3a4dd6e5543d701bf1329533ce0bd61a SHA-1: 9a6ac58e4ae9f0486d572fc548051f60a47a3e81 SHA-256: 2142921ef46d8658d140cf314621283c1bb7ca4591ca4a4f374d3bfbec231761
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'building components and materials' and includes the malicious URL. This suggests a phishing or scam attempt to redirect users to malicious infrastructure. The presence of multiple Shopify links, some confirmed benign and others unknown, indicates a link farm strategy.

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.ru/pify?keyword=building+components+and+materials+pdf
    • http://vodeveja.weddingfeastofthelamb.com/uploads/1/3/1/4/131438392/dawodefa.pdf
    • http://files.kurik9massage.com/uploads/1/3/1/3/131398374/safavudojokifesok.pdf
    • http://files.ashleyparsonsyoga.com/uploads/1/3/2/7/132740415/newixebomufobezofawe.pdf
    • http://files.northernumpires.com/uploads/1/3/0/7/130775727/81fc007397e04.pdf
    • https://cdn.shopify.com/s/files/1/0430/9581/8397/files/lirogi.pdf
    • https://cdn.shopify.com/s/files/1/0432/1673/2320/files/zabubux.pdf
    • https://cdn.shopify.com/s/files/1/0435/2291/6520/files/90451618670.pdf
    • https://cdn.shopify.com/s/files/1/0434/8303/7860/files/.pdf
    • https://cdn.shopify.com/s/files/1/0430/6868/6497/files/gurefosavudazufakix.pdf
    • https://cdn.shopify.com/s/files/1/0435/3576/1576/files/fotopete._comsample_index._html.pdf
    • https://cdn.shopify.com/s/files/1/0427/8799/5807/files/pibuxuderoranejevowiwodo.pdf
    • https://cdn.shopify.com/s/files/1/0428/0342/9535/files/junelejovevapi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/balukajexowow.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/59022585862.pdf
    • https://cdn.shopify.com/s/files/1/0437/5258/7415/files/78005482551.pdf
    • https://cdn.shopify.com/s/files/1/0437/1379/0106/files/the_complete_contest_prep_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/8982/9800/files/27199026168.pdf
    • https://cdn.shopify.com/s/files/1/0431/6214/0840/files/73287774634.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_off0000a9de.bin
a5eaabbe7050a67146492caa3a168bf6aef181a63ada8ab40500d538b9c340c9
pdf-font-stream PDF embedded font (sfnt) at offset 0xA9DE 6100 bytes
font_01_sfnt_off0000bebb.bin
9648fe978d090f322a7dfff40afb4f1570e0e526dd87a9fbbc9e2be4f0847b4f
pdf-font-stream PDF embedded font (sfnt) at offset 0xBEBB 5524 bytes
font_02_sfnt_off0000d172.bin
1bee3a13809424642d6c3b10b42f1365be34364cc7dee5aba3cc32d2060d24a1
pdf-font-stream PDF embedded font (sfnt) at offset 0xD172 10632 bytes