Malicious PDF — malware analysis report

Static analysis result for SHA-256 3089dd25821230b2…

MALICIOUS

PDF

60.5 KB Created: 2020-08-07 00:33:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68ce85bff6a29f62e27a4874c69d302f SHA-1: 5ab1df2bed9ec9c269d1b63d9c49dfbca5aafd93 SHA-256: 3089dd25821230b2c8a8f9cd9adbeb178e5d54748c1790412a135c62b5c827d5
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains, including a link farm on cdn.shopify.com. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure via the URL https://ttraff.cc/pify?keyword=abzurdah+libro+pdf+gratis. This suggests the document is designed to redirect users to potentially harmful content, likely 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.cc/pify?keyword=abzurdah+libro+pdf+gratis
    • http://files.mrbaskwill.com/uploads/1/3/2/6/132683330/b7835a20645.pdf
    • http://files.puiduangpon.com/uploads/1/3/1/4/131452997/435532c8.pdf
    • http://files.erathcountyhabitatforhumanity.org/uploads/1/3/0/7/130740442/581cf49.pdf
    • http://files.mysticsilverglass.com/uploads/1/3/0/8/130874284/tupuzimepotamov_wulifawa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zukukujumifuxutage.pdf
    • https://cdn.shopify.com/s/files/1/0432/2400/6820/files/acting_resume_template.pdf
    • https://cdn.shopify.com/s/files/1/0434/3287/0044/files/chicago_bulls_starting_lineup.pdf
    • https://cdn.shopify.com/s/files/1/0437/3204/1889/files/define_bioavailability.pdf
    • https://cdn.shopify.com/s/files/1/0440/4396/0485/files/pf_withdrawal_form_advanced.pdf
    • https://cdn.shopify.com/s/files/1/0430/4447/0945/files/95934867851.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/mafapeguk.pdf
    • https://cdn.shopify.com/s/files/1/0433/7601/7559/files/modernidad_centro_y_periferia_brunner.pdf
    • https://cdn.shopify.com/s/files/1/0430/3945/7431/files/hbr_guide_to_data_analytics_basics_for_managers_download.pdf
    • https://cdn.shopify.com/s/files/1/0427/5830/8006/files/bikadewiwezusetizi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15501301831.pdf
    • https://cdn.shopify.com/s/files/1/0431/2783/2733/files/vodulakunalokevosepis.pdf
    • https://cdn.shopify.com/s/files/1/0434/6845/6086/files/bldc_driver.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_off0000aba6.bin
417949a9cade015c87a4dea16f8a18e9a3e3e173325aaa253a032f1486368a01
pdf-font-stream PDF embedded font (sfnt) at offset 0xABA6 5480 bytes
font_01_sfnt_off0000be46.bin
2a1a4861fa1a390d6772ed67c4f4fb304c194efbe64daadbfe7fcadfb88ff3ec
pdf-font-stream PDF embedded font (sfnt) at offset 0xBE46 11512 bytes