Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bd2938d45ccb06a…

MALICIOUS

PDF

41.2 KB Created: 2020-08-19 10:44:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89355b0c3f6c6a7f0af15281cc24be03 SHA-1: 6338753062d72f8054ea32750506c3c90ac42dba SHA-256: 9bd2938d45ccb06a2235ceebb7e3bed1cb9bf8caadfdc5e78590337db6034677
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic indicating it links to a known malicious redirector. The document body, though heavily obfuscated, contains the same URL. This suggests the primary purpose is to redirect the user to malicious content. No scripts were extracted from this sample.

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=fire+hardened+mail+guide
    • http://files.jlwarfieldministries.com/uploads/1/3/1/3/131397971/zajalulor-kuvupola-puzotokom-rororuka.pdf
    • http://zuxasom.portablemagic.org/uploads/1/3/0/8/130874655/xisel-makijizimose.pdf
    • http://sevuwesog.whitefishcreations.com/uploads/1/3/1/4/131437462/gizibogan-xawuje-buxuroregel-bikid.pdf
    • http://files.rdavisphd.com/uploads/1/3/2/6/132682852/2558443.pdf
    • https://cdn.shopify.com/s/files/1/0430/7877/9029/files/pulmonary_embolism_diagnosis_and_treatment_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0439/7151/0430/files/bts_bbmas_2019_performance_video.pdf
    • https://cdn.shopify.com/s/files/1/0434/8379/1517/files/verb_noun_adjective_and_adverb_list.pdf
    • https://cdn.shopify.com/s/files/1/0440/7335/3381/files/wezeverogidojinop.pdf
    • https://cdn.shopify.com/s/files/1/0429/3410/8323/files/50780230117.pdf
    • https://cdn.shopify.com/s/files/1/0428/8849/5270/files/dimovolevowitowineva.pdf
    • https://cdn.shopify.com/s/files/1/0428/3439/5295/files/aptitude_test_sample_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0430/5246/6325/files/unix_shell_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0432/9740/7126/files/keurig_k75_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/8090/8949/files/13935816222.pdf
    • https://cdn.shopify.com/s/files/1/0430/6924/3549/files/93461584596.pdf
    • https://cdn.shopify.com/s/files/1/0428/6450/9094/files/sawijuvud.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_off000064ae.bin
2d13d71e7f2d28cb6e7cc1bcc9576d6ffdf9964460f84eb324ef9921f4d80988		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64AE 5016 bytes
font_01_sfnt_off00007585.bin
2f24fcd05a8c60d25f2500047006fc6c074e0a8d848907f7a7750844ebaa535c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7585 10128 bytes

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