Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5779cf948eb9964…

MALICIOUS

PDF

44.1 KB Created: 2020-08-15 03:54:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8630d40a3f6045c1fd4d87b121bf7a63 SHA-1: 4daea46e2a3ab27aca8245e46ac11dcbf4032066 SHA-256: d5779cf948eb9964e4675044af7b437aa5fe790ef6dfc46801f53aecb8e47285
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating a link to known malicious infrastructure. Additionally, PDF_SEO_LINK_FARM suggests a large number of external links, with the primary one being a redirector. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/pify?keyword=druid+wow+guide+classic, which is likely the initial lure. The presence of numerous Shopify links, while some are benign, suggests a tactic to blend malicious links with seemingly legitimate ones.

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=druid+wow+guide+classic
    • http://files.gaylereynolds.com/uploads/1/3/1/4/131482988/725591.pdf
    • http://files.susannebrandstaetter.com/uploads/1/3/1/4/131437984/8695114.pdf
    • http://mobali.renwickpark.com/uploads/1/3/1/3/131381679/doxinofekodoni_gatujevabab_zijiz.pdf
    • https://cdn.shopify.com/s/files/1/0433/8886/2614/files/jozide.pdf
    • https://cdn.shopify.com/s/files/1/0434/5249/8070/files/case_study_master_thesis.pdf
    • https://cdn.shopify.com/s/files/1/0431/7999/9383/files/minem.pdf
    • https://cdn.shopify.com/s/files/1/0436/2184/3106/files/85169855703.pdf
    • https://cdn.shopify.com/s/files/1/0435/0889/1807/files/27676911088.pdf
    • https://cdn.shopify.com/s/files/1/0430/1602/8309/files/asynchronous_fifo_design.pdf
    • https://cdn.shopify.com/s/files/1/0433/2909/3784/files/kolufufasukof.pdf
    • https://cdn.shopify.com/s/files/1/0433/9341/7383/files/malie_sheet_mask_in_dubai.pdf
    • https://cdn.shopify.com/s/files/1/0429/4161/2199/files/tugadu.pdf
    • https://cdn.shopify.com/s/files/1/0429/2309/8279/files/rinosowezebisuwakerudat.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_off000064d6.bin
707d3a70aee0408906dfbeb415339a89018231008061c2764abf9debff489072		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64D6 4892 bytes
font_01_sfnt_off00007597.bin
81a20e9bb23c04cfe1cb65a7c414deec1803f1dbcafaa1cec737b438af94d491		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7597 9324 bytes
font_02_sfnt_off00009585.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9585 4324 bytes

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