Malicious PDF — malware analysis report

Static analysis result for SHA-256 966dfb2296171605…

MALICIOUS

PDF

48.0 KB Created: 2020-08-14 04:01:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aac01a0b63b810a0e4aab7a9a3105555 SHA-1: b106b3da95964b0aa239d3d207995773505275d1 SHA-256: 966dfb2296171605805220615a6128236b6384220c7479e204e00c9b7aaa1b94
150 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'Penelope douglas books pdf' and the URLs themselves, suggesting a lure to entice users to click on malicious links. The presence of numerous external PDF links, many hosted on shopify.com, further indicates a link farm or SEO poisoning tactic 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.com/wb?keyword=penelope%20douglas%20books%20pdf
    • http://files.theventure.blog/uploads/1/3/1/6/131606923/2826909.pdf
    • http://files.marksthespottx.com/uploads/1/3/0/7/130776164/b86dda49e7f.pdf
    • http://files.louisianascreenwriter.com/uploads/1/3/1/4/131452878/jegiv.pdf
    • http://xikov.jerryday.org/uploads/1/3/1/4/131482995/6743778.pdf
    • http://milimoma.banjobuyingguide.com/uploads/1/3/2/6/132681670/nexedakis.pdf
    • https://cdn.shopify.com/s/files/1/0438/3634/2434/files/21157829799.pdf
    • https://cdn.shopify.com/s/files/1/0434/8215/3112/files/valowebilimuvoxarujitap.pdf
    • https://cdn.shopify.com/s/files/1/0437/0730/2037/files/samumugudesiligopozakudo.pdf
    • https://cdn.shopify.com/s/files/1/0433/7824/5781/files/zogevikamupepojano.pdf
    • https://cdn.shopify.com/s/files/1/0434/2795/4853/files/before_sunset_screenplay.pdf
    • https://cdn.shopify.com/s/files/1/0434/0485/3402/files/risc_cisc_architecture.pdf
    • https://cdn.shopify.com/s/files/1/0439/7573/7502/files/turnigy_9x_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/0661/3912/files/2006_mitsubishi_galant_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/6566/1853/files/monster_manual_iv.pdf
    • https://cdn.shopify.com/s/files/1/0432/8806/8254/files/14414521865.pdf
    • https://cdn.shopify.com/s/files/1/0431/6856/3355/files/10677288979.pdf
    • https://cdn.shopify.com/s/files/1/0437/4288/8097/files/ibps_exam_books_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/3320/6690/files/while_statement_java.pdf
    • https://cdn.shopify.com/s/files/1/0434/3863/7208/files/50555107734.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_off0000671f.bin
c4bfcc3b2278950be01fe9aa68b3ce0e08abefe08912066d36f6c911edf65ce8
pdf-font-stream PDF embedded font (sfnt) at offset 0x671F 5316 bytes
font_01_sfnt_off00007944.bin
6db7ea6cb7f2d17ec5ee5fee5fa66cdd4af755a9354ab12041d6474f776a7181
pdf-font-stream PDF embedded font (sfnt) at offset 0x7944 10120 bytes
font_02_sfnt_off00009c20.bin
e01b01a3b531b4abb8c7ff911d5e5e6e34f307a58d20f32b8fe264e686b8f7f4
pdf-font-stream PDF embedded font (sfnt) at offset 0x9C20 16612 bytes