Malicious PDF — malware analysis report

Static analysis result for SHA-256 98c7fab4f4b02cac…

MALICIOUS

PDF

51.5 KB Created: 2020-08-06 14:18:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b522bc09b51202bf8c21e6d13cfbf3e6 SHA-1: b0cfcacc134a66c08cb2ebcacc1a47f0a7b81be7 SHA-256: 98c7fab4f4b02cacf0338a1e1dd3a640ae813771cc71cdc2bba3e445b7ccc0c5
148 Risk Score

Malware Insights

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

The PDF file contains embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'declaration of assets and liabilities format in pdf' and also includes the malicious URL. This suggests a phishing or scam attempt designed to trick the user into visiting a harmful site.

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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.ru/pify?keyword=declaration+of+assets+and+liabilities+format+in+pdf
    • http://files.laurengallaspy.com/uploads/1/3/1/4/131411197/navewipot.pdf
    • http://files.christopherjdevine.com/uploads/1/3/0/7/130776022/27fd889.pdf
    • http://files.anglingoregon.com/uploads/1/3/0/9/130969438/1990622.pdf
    • http://files.redeemergastonia.org/uploads/1/3/1/4/131438157/vivifipezewo.pdf
    • http://files.haralsoncountyhistory.com/uploads/1/3/2/3/132302913/4438840.pdf
    • https://cdn.shopify.com/s/files/1/0437/6405/6225/files/tevedisotija.pdf
    • https://cdn.shopify.com/s/files/1/0427/4274/3207/files/nifoxisama.pdf
    • https://cdn.shopify.com/s/files/1/0429/5216/3482/files/81999703060.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/9671930410.pdf
    • https://cdn.shopify.com/s/files/1/0431/1459/4464/files/96365406658.pdf
    • https://cdn.shopify.com/s/files/1/0429/5258/9465/files/69720861931.pdf
    • https://cdn.shopify.com/s/files/1/0437/1218/4474/files/biguworonoresaluwulisu.pdf
    • https://cdn.shopify.com/s/files/1/0434/8693/7253/files/mewitene.pdf
    • https://cdn.shopify.com/s/files/1/0436/0785/1171/files/reading_advertisements_for_comprehension_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0430/6360/7445/files/18493171428.pdf
    • https://cdn.shopify.com/s/files/1/0431/5217/9364/files/jawitegadufebu.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_off00007ac7.bin
0cab7da748edb297e79e0b62bff56abee72c771f142c21d44c643a2084ff7394
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AC7 5228 bytes
font_01_sfnt_off00008c6f.bin
d187d5d9d5fb7f9b35bb7dd12980dca4b51c74220b3ac2621e2550489ae1c799
pdf-font-stream PDF embedded font (sfnt) at offset 0x8C6F 11160 bytes
font_02_sfnt_off0000b27c.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0xB27C 4324 bytes