Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ce1ae3ea7f15000…

MALICIOUS

PDF

40.9 KB Created: 2020-08-18 21:40:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90e79c2c5bb64d94358a663c0ac500ad SHA-1: a56b722ce14aa0062f32ed3b12e6cfcb52c1d8ae SHA-256: 9ce1ae3ea7f15000184b323d0d139cb39ee9d7a1fc73b48a5627e6faac8d6ca3
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. This suggests the primary purpose is to lure the user to a malicious site. No scripts were extracted, limiting the analysis of further stages.

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=vejiga+neurogenica+pdf+2016
    • http://files.katascuba.com/uploads/1/3/1/4/131483253/5349126.pdf
    • https://cdn.shopify.com/s/files/1/0432/9324/5590/files/fujojimiduwopigokibiwegu.pdf
    • https://cdn.shopify.com/s/files/1/0440/1568/1701/files/cbse_english_grammar_book_for_class_4.pdf
    • https://cdn.shopify.com/s/files/1/0429/3787/6639/files/bergey_s_manual_microbiology.pdf
    • https://cdn.shopify.com/s/files/1/0432/3062/5950/files/29452586007.pdf
    • https://cdn.shopify.com/s/files/1/0438/0481/9613/files/cause_and_effect_of_earthquake.pdf
    • https://cdn.shopify.com/s/files/1/0440/1581/2773/files/1047505949.pdf
    • https://cdn.shopify.com/s/files/1/0433/0238/7867/files/candy_armor_rotmg.pdf
    • https://cdn.shopify.com/s/files/1/0437/5222/6974/files/rilegopofupururoxef.pdf
    • https://cdn.shopify.com/s/files/1/0431/8127/7342/files/satopolufiwalije.pdf
    • https://cdn.shopify.com/s/files/1/0440/4301/0198/files/b_p_lathi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9927/5935/files/81631287349.pdf
    • https://cdn.shopify.com/s/files/1/0432/7433/8454/files/desuxixiduluwud.pdf
    • https://cdn.shopify.com/s/files/1/0437/7935/8869/files/13th_14th_and_15th_amendments_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/0860/5859/files/air_mirror_for_chromecast_tv.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_off000060fd.bin
164a99610ad27bc32bb06ac6a7da0bff6511f30c012ce70c6b4ffc18825d7685		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60FD 5636 bytes
font_01_sfnt_off0000744b.bin
d2b92741384570a9c1a17efae266308735d75538355bb7f001df43a54422d749		 pdf-font-stream PDF embedded font (sfnt) at offset 0x744B 10112 bytes

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