Malicious PDF — malware analysis report

Static analysis result for SHA-256 e778f3f9456d982c…

MALICIOUS

PDF

51.3 KB Created: 2020-08-19 22:06:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0203c01f5be4d1981f812f6bce1a8a40 SHA-1: 5182a1ffedf528ddbbd5821001ec95a4f12f856f SHA-256: e778f3f9456d982cad0f1486f24e9c63e708aec3017fbcc5595402636a3e6323
150 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which points to a URL related to 'blood money full movie'. This suggests a social engineering lure to entice users to click the link. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many of which are benign Shopify links, but one critical redirector. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted from this sample, but the presence of the malicious redirector indicates a likely attempt to lead the user to a malicious site for further exploitation or phishing.

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=blood+money+full+movie++movies+counter
    • http://files.scs99.com/uploads/1/3/0/7/130739678/rasetetabovaxakubow.pdf
    • http://files.littleladyo.com/uploads/1/3/0/9/130969004/furopigolijur.pdf
    • http://files.lymeaustralia.com/uploads/1/3/1/6/131606035/zixoredote.pdf
    • https://cdn.shopify.com/s/files/1/0431/1141/5959/files/pharmacy_personal_statements.pdf
    • https://cdn.shopify.com/s/files/1/0429/6962/8828/files/how_to_run_shell_file.pdf
    • https://cdn.shopify.com/s/files/1/0434/0088/8469/files/50526508660.pdf
    • https://cdn.shopify.com/s/files/1/0431/5663/5812/files/boxozup.pdf
    • https://cdn.shopify.com/s/files/1/0431/5843/8056/files/maropaziwotigavofixupoto.pdf
    • https://cdn.shopify.com/s/files/1/0435/7432/9507/files/62008461008.pdf
    • https://cdn.shopify.com/s/files/1/0432/5919/9650/files/chipmunk_information_in_spanish.pdf
    • https://cdn.shopify.com/s/files/1/0431/9599/0175/files/76189345577.pdf
    • https://cdn.shopify.com/s/files/1/0431/4864/0418/files/xatogamixidulofixop.pdf
    • https://cdn.shopify.com/s/files/1/0431/3474/6790/files/sisters_pickle_amelie_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0433/4161/1159/files/reactjs_checkout_form.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067f1.bin
4f1682743921f195a71b6f0144736a4267013fd0dda8d87ba22da5f3bc4e7729
pdf-font-stream PDF embedded font (sfnt) at offset 0x67F1 5052 bytes
font_01_sfnt_off00007917.bin
d692e997c2da6672e7d11aff7dedef58b0f34447074f370f0f8acb7a8a08e615
pdf-font-stream PDF embedded font (sfnt) at offset 0x7917 10360 bytes
font_02_sfnt_off00009cd9.bin
ebd2804bff382343e08f6a42dc45f69f4e794c08b23908ae60ba78ededae74b1
pdf-font-stream PDF embedded font (sfnt) at offset 0x9CD9 16164 bytes
font_03_sfnt_off0000b1f1.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71
pdf-font-stream PDF embedded font (sfnt) at offset 0xB1F1 4324 bytes