Malicious PDF — malware analysis report

Static analysis result for SHA-256 48f4003897c5e857…

MALICIOUS

PDF

42.2 KB Created: 2020-09-07 02:01:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c60d77fd978350c26459bf8caa97d72 SHA-1: 14338c33b3ff8be293defba7c6ae8796c558b796 SHA-256: 48f4003897c5e857545b6301eae02c4e140f375f1202690e217f410be252049b
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with a critical heuristic firing indicating it's a malicious redirector. The document body text explicitly mentions 'Alternative of idm free' and includes the malicious URL. This suggests a social engineering tactic to trick users into clicking the link, which then redirects to potentially harmful 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.me/wix?keyword=alternative+of+idm+free
    • https://static.usrfiles.com/ugd/ab922d_f60fa4b2ea064af496c21b61a42a3789.pdf
    • https://static.usrfiles.com/ugd/b8c837_42246c1f7e694986bcaaca0ab1f366a2.pdf
    • https://static.usrfiles.com/ugd/5438e3_a83913056df94fc4906da2036eb68daf.pdf
    • https://cdn.shopify.com/s/files/1/0433/9014/0581/files/7574711824.pdf
    • https://cdn.shopify.com/s/files/1/0439/1544/4376/files/microscope_parts_and_use_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/8209/6541/files/where_is_skyrim._ini.pdf
    • https://cdn.shopify.com/s/files/1/0432/3786/7687/files/mizesawisep.pdf
    • https://cdn.shopify.com/s/files/1/0428/9354/1532/files/meditation_guided_scripts_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/3276/3801/files/64493323679.pdf
    • https://cdn.shopify.com/s/files/1/0431/0165/1105/files/letter_counter_java.pdf
    • https://cdn.shopify.com/s/files/1/0432/1860/0095/files/96978971073.pdf
    • https://cdn.shopify.com/s/files/1/0433/7837/6853/files/naxosonawesiga.pdf
    • https://static.usrfiles.com/ugd/a4d998_2f6c1b1d35b3435dbcae4c6552327e4a.pdf
    • https://static.usrfiles.com/ugd/9edd50_7b23dc2605a34010a06a889ebb02b692.pdf
    • https://static.usrfiles.com/ugd/374ce0_683f936e344c4c6bb80557ec0be770de.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_off00006749.bin
464219e737a6e25161132b241f622749f564cd3f8019057ec8ec007e381a3048		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6749 4924 bytes
font_01_sfnt_off000077fe.bin
67caae8bc35df16082717aff480ad3c57b365805b7a68078900b3917c33d91a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77FE 10592 bytes

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