Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2b1f84dd9a0cc0b…

MALICIOUS

PDF

46.6 KB Created: 2020-08-19 01:57:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f76cbdf6465ce45d34b2c06fd01c4ed6 SHA-1: aa772207666ab33c5f4ca98633134f0c1865140e SHA-256: b2b1f84dd9a0cc0bfd25c975c21f4b92d4380e9ad076e22eda3135b8ba507f1f
152 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 embedded links, indicating a link farm. The ML classifier also strongly indicated maliciousness. The primary malicious URL identified is https://ttraff.ru/pify?keyword=periodic+table+color+sheet, which is likely used to redirect users to further malicious content. The document body contains a mix of seemingly benign text and the identified malicious URL, suggesting a lure to disguise the malicious intent.

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.ru/pify?keyword=periodic+table+color+sheet
    • http://tovabano.mithphotography.com/uploads/1/3/0/8/130874422/gakotasojo_mavumoxiledo_filegafokon.pdf
    • http://gisunu.cosbydental.com/uploads/1/3/2/8/132814007/e5023097b.pdf
    • http://texujo.calebeverett.org/uploads/1/3/1/4/131409508/282375c.pdf
    • http://files.heatherseastheworld.com/uploads/1/3/1/4/131438098/getuteda.pdf
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/midozavuduzi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/47878122177.pdf
    • https://cdn.shopify.com/s/files/1/0430/0098/7801/files/importance_of_globalization.pdf
    • https://cdn.shopify.com/s/files/1/0435/9186/0383/files/sijasebataluxekazatedovi.pdf
    • https://cdn.shopify.com/s/files/1/0440/6670/1477/files/bhagavad_gita_spanish.pdf
    • https://cdn.shopify.com/s/files/1/0431/9933/2516/files/the_art_of_war.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/47171602999.pdf
    • https://cdn.shopify.com/s/files/1/0431/3579/5354/files/muzowodufevimuz.pdf
    • https://cdn.shopify.com/s/files/1/0435/8704/3496/files/vubilezuxejid.pdf
    • https://cdn.shopify.com/s/files/1/0441/0349/9928/files/agada_tantra_books_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/7675/4344/files/35102035242.pdf
    • https://cdn.shopify.com/s/files/1/0429/6369/7817/files/540x_mailing_address.pdf
    • https://cdn.shopify.com/s/files/1/0432/1771/5361/files/jorej.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_off00007926.bin
21bc9df6169181e30856a876565d5d084e02754f3312609f0e143097f24cb904		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7926 5168 bytes
font_01_sfnt_off00008aa1.bin
fefbb886c33eac27782a546234e45acb5ff3720a8b3a0825efbdcf9aaf97a7a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AA1 10204 bytes

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