Malicious PDF — malware analysis report

Static analysis result for SHA-256 f27c0e5732003e10…

MALICIOUS

PDF

41.7 KB Created: 2020-08-22 17:12:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9bef4fbcdff00d717156c9d1796530f8 SHA-1: e326b9960f44d57b9bc296437396f79b4c3cab25 SHA-256: f27c0e5732003e1082012f7c812bd4c7c7ed9d876a4b87662fbc54ea9614e25e
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing a malicious redirector link and a large number of external links, suggesting a link farm. The primary malicious URL identified is https://ttraff.cc/pify?keyword=cg+avm+gana+video, which is likely used to obscure the ultimate destination of the attack. The document body contains garbled text but also repeats the malicious URL and several benign-looking Shopify URLs, indicating a potential lure or obfuscation technique. No scripts were extracted from this sample.

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=cg+avm+gana+video
    • http://tifad.youthfulnest.com/uploads/1/3/1/3/131398134/8189973.pdf
    • http://files.rhpulleydesign.com/uploads/1/3/2/8/132814030/6256749.pdf
    • http://files.healthyfitlife.co.uk/uploads/1/3/2/6/132682282/fa4d9ff8db1d7.pdf
    • https://cdn.shopify.com/s/files/1/0429/5829/1093/files/55812256178.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/juralizuputusekuwozipifom.pdf
    • https://cdn.shopify.com/s/files/1/0437/5127/6696/files/74379383304.pdf
    • https://cdn.shopify.com/s/files/1/0431/3304/2839/files/software_architecture_book.pdf
    • https://cdn.shopify.com/s/files/1/0437/8581/4177/files/assam_police_admit_card_date.pdf
    • https://cdn.shopify.com/s/files/1/0432/7194/6398/files/rizowusekofixixeriko.pdf
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/nirobita.pdf
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/18463192422.pdf
    • https://cdn.shopify.com/s/files/1/0429/7746/0383/files/gusto_ko_sumabog_meme_template.pdf
    • https://cdn.shopify.com/s/files/1/0432/7122/5502/files/tesis_de_acoso_escolar.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/97897646990.pdf
    • https://cdn.shopify.com/s/files/1/0431/5407/9904/files/atos_2018_integrated_report.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_off00005e87.bin
ebd3dfe2ceb754e9322592c796fa54aac5d55f138ca0d0ddbf7e8c95b8bb7021
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E87 4804 bytes
font_01_sfnt_off00006ecd.bin
0107d23f5e7c72ecfeb509320073096067d0cb3a2c0fb1640fb0f617e055baa2
pdf-font-stream PDF embedded font (sfnt) at offset 0x6ECD 1688 bytes
font_02_sfnt_off00007727.bin
966898301faedcdc82d55d5adcc93cdd5508df5eb539f28313e68c815620a9f6
pdf-font-stream PDF embedded font (sfnt) at offset 0x7727 10216 bytes