Malicious PDF — malware analysis report

Static analysis result for SHA-256 2035ee4fe94e7ad3…

MALICIOUS

PDF

50.3 KB Created: 2020-08-06 21:38:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5fdff3b52dd22f13068f65f621d470bd SHA-1: c1364da589cf31f2be0f804ce625940bfde7900d SHA-256: 2035ee4fe94e7ad3cb8dc4d17f9c1fc454e01a1cb02525e2da700f08891c2764
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF file contains multiple embedded links, with a critical heuristic firing indicating a malicious redirector link. The document body, though heavily corrupted, contains text related to a 'British English slang dictionary PDF' and the malicious URL. This suggests a social engineering lure to trick users into clicking the malicious link, which is designed to redirect to further malicious content.

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=british+english+slang+dictionary+pdf
    • http://files.wholeheartedpt.co.uk/uploads/1/3/1/6/131636789/6214482.pdf
    • http://files.dyerlakenewfoundlands.com/uploads/1/3/1/3/131380177/literilugomagiwavezi.pdf
    • http://files.realworldanaesthesia.org/uploads/1/3/2/6/132695492/7824762.pdf
    • https://cdn.shopify.com/s/files/1/0433/6254/9910/files/lipurenejulujudune.pdf
    • https://cdn.shopify.com/s/files/1/0432/1673/2315/files/public_finance_management_act_zimbabwe.pdf
    • https://cdn.shopify.com/s/files/1/0437/8948/4190/files/16522404249.pdf
    • https://cdn.shopify.com/s/files/1/0432/2862/7099/files/bs_iso_22301.pdf
    • https://cdn.shopify.com/s/files/1/0428/1883/0503/files/63076197747.pdf
    • https://cdn.shopify.com/s/files/1/0435/7311/7087/files/essential_mathematics_for_economic_analysis_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0428/9721/1558/files/99513750825.pdf
    • https://cdn.shopify.com/s/files/1/0434/0298/5621/files/duzezeribe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bekikelazipilexujewa.pdf
    • https://cdn.shopify.com/s/files/1/0437/1618/2184/files/like_water_for_chocolate_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/3040/4502/files/13524024285.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_off00007775.bin
421032ef42690e288d893374884199f1f5a7d66073795d4e7822e3fac18e1c00		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7775 5356 bytes
font_01_sfnt_off000089a8.bin
c33674b685d4411656a0f80c2ed7358b6a2a3b16e7494190480c99d289e7fee6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89A8 10688 bytes
font_02_sfnt_off0000adad.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xADAD 4324 bytes

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