Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a4b513055113beb…

MALICIOUS

PDF

44.6 KB Created: 2020-08-08 06:20:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fde0d77c50c577549de70f4216200885 SHA-1: 3657758f97fec503898c75a1025fdfb665493006 SHA-256: 9a4b513055113bebeedc3243b83dad9beb7fc7399971ef0e95c06202ea8fc8da
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link 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, contains text related to 'Carcassonne board game rules pdf' and includes the malicious URL, suggesting a lure to trick users into clicking. The presence of a 'PDF_SEO_LINK_FARM' heuristic indicates a large number of outbound links, likely for SEO manipulation or to obscure malicious destinations. A 'SE_LOLBIN_RUN_COMMAND' heuristic suggests that the document may also contain instructions for executing commands, potentially via embedded scripts or by leveraging system utilities.

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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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=carcassonne+board+game+rules+pdf
    • http://files.fincast.com.au/uploads/1/3/1/6/131607158/napiwewatidoren_lonotafegigev.pdf
    • http://files.streetstampederally.com/uploads/1/3/1/4/131410370/6f13401db7b0e1c.pdf
    • http://files.longsightnursery.co.uk/uploads/1/3/1/6/131606206/1600284.pdf
    • http://files.acmdev.net/uploads/1/3/1/4/131438245/c930290ef648522.pdf
    • http://files.sassysewingandembroidery.com/uploads/1/3/0/7/130776275/xugolexog.pdf
    • https://cdn.shopify.com/s/files/1/0435/1141/4943/files/dodajetoxapeteromebowem.pdf
    • https://cdn.shopify.com/s/files/1/0432/6057/5894/files/xideludaniranunezuvad.pdf
    • https://cdn.shopify.com/s/files/1/0435/2920/7957/files/balarama_digest_in_malayalam.pdf
    • https://cdn.shopify.com/s/files/1/0431/3081/4626/files/gumawenarig.pdf
    • https://cdn.shopify.com/s/files/1/0449/9243/0248/files/nevetasesegadesezotikag.pdf
    • https://cdn.shopify.com/s/files/1/0430/2487/5674/files/artificial_neural_networks_and_their_applications.pdf
    • https://cdn.shopify.com/s/files/1/0430/8962/5241/files/numazageka.pdf
    • https://cdn.shopify.com/s/files/1/0427/4506/9724/files/astrology_books_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/1732/3175/files/68671711943.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/82595467958.pdf
    • https://cdn.shopify.com/s/files/1/0431/6174/7605/files/60215913274.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_off00006ffb.bin
ab6de6a079a566e35f90d6617ea42567d2bcaca603821bfaf8637d59d80cfea0
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FFB 5520 bytes
font_01_sfnt_off0000829f.bin
86dd210b548c55a7d255c9542c33fd0d0646e6d4eb192c90df4732bbf747d9c7
pdf-font-stream PDF embedded font (sfnt) at offset 0x829F 10240 bytes