Malicious PDF — malware analysis report

Static analysis result for SHA-256 1efbbb8f6fae7dca…

MALICIOUS

PDF

47.1 KB Created: 2020-08-23 04:15:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e96377e1d786aeec5020db8aa1e006b SHA-1: 6aeb760e20e0d6693056a32a6946675175da44fa SHA-256: 1efbbb8f6fae7dca9f22078a474f4955b7afcb4fb22a00749e7753d8dbba97d8
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to suspicious or unknown domains, indicating a link farm or redirector strategy. One critical heuristic identified a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be the primary lure. The presence of numerous PDF links suggests an attempt to drive traffic to malicious sites, potentially for phishing or malware distribution.

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=appalachian+spring+full+score+pdf
    • http://befetus.kdwineimports.com/uploads/1/3/2/6/132681670/8a0d7af37b92.pdf
    • http://files.ayeeprettyblack.com/uploads/1/3/0/7/130738548/3995609.pdf
    • http://files.skintwalletsusa.com/uploads/1/3/1/4/131405977/bonazovesoj.pdf
    • http://wakelupu.snapdragonphotographymd.com/uploads/1/3/0/7/130776330/d86965db609f6.pdf
    • http://nazide.wearemetamate.com/uploads/1/3/0/8/130873804/177287.pdf
    • https://cdn.shopify.com/s/files/1/0451/8638/4023/files/cartoon_drawing_techniques.pdf
    • https://cdn.shopify.com/s/files/1/0435/8632/2600/files/todovab.pdf
    • https://cdn.shopify.com/s/files/1/0430/8893/7120/files/states_of_matter_worksheet_grade_1.pdf
    • https://cdn.shopify.com/s/files/1/0432/9691/5621/files/75596488322.pdf
    • https://cdn.shopify.com/s/files/1/0433/7922/8833/files/insta_house_mod_for_minecraft_pe.pdf
    • https://cdn.shopify.com/s/files/1/0436/7355/1001/files/chemistry_revision_notes_class_12.pdf
    • https://cdn.shopify.com/s/files/1/0432/9511/3374/files/informacion_de_chinampas.pdf
    • https://cdn.shopify.com/s/files/1/0431/5417/8216/files/fusavoxopaxuzotejibidu.pdf
    • https://cdn.shopify.com/s/files/1/0446/1415/6451/files/que_son_las_bacterias_aerobias.pdf
    • https://cdn.shopify.com/s/files/1/0439/1727/9400/files/xobavovunonijawufet.pdf
    • https://cdn.shopify.com/s/files/1/0433/6615/4394/files/how_to_read_english_newspaper_download.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_off00006528.bin
a4f8d9942accfa8e7d58428f11e0d423aec015cf558b231b115fd42420a4da94
pdf-font-stream PDF embedded font (sfnt) at offset 0x6528 5408 bytes
font_01_sfnt_off00007777.bin
6e1928f592ba2d9479506cb567f9ac19ae0a7b19aee3bd95017e34483badded0
pdf-font-stream PDF embedded font (sfnt) at offset 0x7777 10120 bytes
font_02_sfnt_off00009a56.bin
15a68420f1c377824b8c1fd571ac7c30556db1b4bc05006bf44ec3f6c6c83208
pdf-font-stream PDF embedded font (sfnt) at offset 0x9A56 16120 bytes