Malicious PDF — malware analysis report

Static analysis result for SHA-256 45652b237a79b238…

MALICIOUS

PDF

37.2 KB Created: 2020-08-13 06:38:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75eaa1e275a0e5ea63e33e377c3912fa SHA-1: 779b4eea1c1043b4ed1895b9ec48177da38769bc SHA-256: 45652b237a79b2384395a6c05bb7becbf8105b79a429b9eeb6aa3684b04d102c
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating it points to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the primary malicious URL. The presence of a link farm suggests an attempt to distribute malicious content widely.

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.com/pify?keyword=three+billy+goats+gruff+masks+pdf
    • http://files.chrishendersoncoaching.com/uploads/1/3/2/6/132682897/patovepo.pdf
    • http://files.suzannevyletel.com/uploads/1/3/0/7/130739633/lugotin_sizefis_metepubiwekas.pdf
    • http://wororizom.focusonyou-online.net/uploads/1/3/0/7/130776167/9827474.pdf
    • http://files.number120designs.com/uploads/1/3/1/4/131453396/jagivafeb.pdf
    • https://cdn.shopify.com/s/files/1/0438/4571/4077/files/71198153036.pdf
    • https://cdn.shopify.com/s/files/1/0435/8628/9832/files/67878913172.pdf
    • https://cdn.shopify.com/s/files/1/0433/8532/3683/files/94548971739.pdf
    • https://cdn.shopify.com/s/files/1/0437/6612/0609/files/80011681023.pdf
    • https://cdn.shopify.com/s/files/1/0429/6271/4773/files/4251399701.pdf
    • https://cdn.shopify.com/s/files/1/0431/0604/2023/files/chhattisgarh_news_paper.pdf
    • https://cdn.shopify.com/s/files/1/0427/6781/0726/files/63502232619.pdf
    • https://cdn.shopify.com/s/files/1/0449/8941/5583/files/anemia_hemolitica_inmune.pdf
    • https://cdn.shopify.com/s/files/1/0429/1425/0905/files/26246313505.pdf
    • https://cdn.shopify.com/s/files/1/0431/7629/6614/files/25444146192.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_off0000523a.bin
f9538d274230a0bb424df525935927111ee4f0fe14a814383804b4cfc5352e71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x523A 5708 bytes
font_01_sfnt_off00006589.bin
ae66a0f0496b96c86417c53b137f5716e13c5646730952dbfbcde6c9e1768215		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6589 10108 bytes

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