Malicious PDF — malware analysis report

Static analysis result for SHA-256 f91195cba2e8116d…

MALICIOUS

PDF

39.4 KB Created: 2020-08-22 00:42:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 87e9acdb16de09ca20dfc142a9c5d135 SHA-1: f3ef75e17478de9edc818751091d23b0a9c88780 SHA-256: f91195cba2e8116d62fc957821c5420850052fdb4c2543d8e6a240497f38cf32
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though partially corrupted, suggests a lure related to educational worksheets. The primary heuristic indicates the PDF is a malicious redirector, and the embedded URL is the highest priority IOC. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=powers+and+exponents+worksheets+grade+6
    • http://files.apl-stayconnected.org/uploads/1/3/1/8/131872054/danimulakawubot.pdf
    • https://cdn.shopify.com/s/files/1/0433/6159/9656/files/22439017683.pdf
    • https://cdn.shopify.com/s/files/1/0436/8983/6697/files/xobobekezemawijoxuludo.pdf
    • https://cdn.shopify.com/s/files/1/0440/6706/1910/files/2003_kawasaki_z1000_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/7515/7670/files/experience_letter_format.pdf
    • https://cdn.shopify.com/s/files/1/0431/9644/8917/files/76674218184.pdf
    • https://cdn.shopify.com/s/files/1/0437/9662/7616/files/63496241007.pdf
    • https://cdn.shopify.com/s/files/1/0438/3594/9218/files/vixejisopewukamusotofe.pdf
    • https://cdn.shopify.com/s/files/1/0432/4681/3344/files/woxiriporav.pdf
    • https://cdn.shopify.com/s/files/1/0429/8155/6375/files/paliwelaxawoporunup.pdf
    • https://cdn.shopify.com/s/files/1/0429/6550/0060/files/16916060812.pdf
    • https://cdn.shopify.com/s/files/1/0437/9426/8320/files/ninesinom.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_off000057b4.bin
5062a1cd134daebd47a3548e4e5739ad4d88ed2d411091a21a48b823e7079e3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57B4 5568 bytes
font_01_sfnt_off00006aae.bin
d811da8ddefb36a4c8054d1ea08cec5da2a298bbbe894a9614ba51c29c1cc485		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AAE 11376 bytes

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