Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3575ad9f8199324…

MALICIOUS

PDF

55.6 KB Created: 2020-08-30 02:40:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab39b5ebd017f684c2f29813dd349281 SHA-1: 63a6d7d094a643f7e10c6a81073f53712d788ca0 SHA-256: c3575ad9f819932415d25d7252ad34fd5f247287356f778c47f684e504ddcff9
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one prominent link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for popular media content, combined with the malicious URL. This suggests the PDF is designed to trick users into clicking the malicious link, likely to download further malware or engage in phishing. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wix?keyword=download+i+like+it+cardi+b
    • https://cdn.shopify.com/s/files/1/0434/4614/1093/files/27071485026.pdf
    • https://cdn.shopify.com/s/files/1/0430/3339/5353/files/business_proposal_template_for_investors.pdf
    • https://cdn.shopify.com/s/files/1/0428/4959/9651/files/zupibarepegesu.pdf
    • https://cdn.shopify.com/s/files/1/0433/3626/9983/files/gexebareragew.pdf
    • https://cdn.shopify.com/s/files/1/0432/6916/1110/files/58710177899.pdf
    • https://cdn.shopify.com/s/files/1/0434/9358/9142/files/dadep.pdf
    • https://cdn.shopify.com/s/files/1/0430/8480/8346/files/deadpool_2_trailer_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0433/6415/5560/files/game_blade_sword_of_elysion_apk.pdf
    • https://cdn.shopify.com/s/files/1/0428/7073/5014/files/71922014904.pdf
    • https://cdn.shopify.com/s/files/1/0432/4841/8973/files/owners_manual_toyota_corolla_2006.pdf
    • https://cdn.shopify.com/s/files/1/0434/4627/2162/files/biodiversity_management_plan_template.pdf
    • https://cdn.shopify.com/s/files/1/0429/4528/2214/files/bluestacks_developer_options_apk.pdf
    • https://cdn.shopify.com/s/files/1/0428/4357/0343/files/78385114354.pdf
    • https://cdn.shopify.com/s/files/1/0429/5367/0822/files/value_investing_and_behavioural_finance.pdf
    • https://cdn.shopify.com/s/files/1/0433/0392/7973/files/osmanlca_vezin_bulma_altrmalar.pdf
    • https://cdn.shopify.com/s/files/1/0465/4176/6814/files/law_of_attraction_money.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000662e.bin
2f9e3439b4e6130a4630e7c6a63b1bd8875e86ac571f8931a0c0e74c7d0fac70		 pdf-font-stream PDF embedded font (sfnt) at offset 0x662E 4840 bytes
font_01_sfnt_off000076b2.bin
df2808fcf325168d243d505f849b5f7a8b14e132c38671d66c1a123c52eb9ff6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76B2 4148 bytes
font_02_sfnt_off000086f7.bin
cdea546fe6c6733e5426666525925982b01abe0f912a1fc8b463af90d6d1eb91		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86F7 10776 bytes
font_03_sfnt_off0000ac0b.bin
f1daf442394ffa86c706b61185645824c0f50ac53794f3dc9729b407829715fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC0B 16928 bytes
font_04_sfnt_off0000c2c8.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC2C8 4324 bytes

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