Malicious PDF — malware analysis report

Static analysis result for SHA-256 098716a0363faa23…

MALICIOUS

PDF

41.7 KB Created: 2020-08-29 18:38:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 436ee6e193c4af8688d101541af87994 SHA-1: 29724edc0bb98984c5ab78e3593dd23019446b13 SHA-256: 098716a0363faa23a8bbfd0f9796b51b675a04d3436fe87e754ca41eaac1460b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with one identified as a malicious redirector. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' indicates the document's content is designed to trick users into believing they are involved in a lottery, prize, or parcel delivery scheme, which is a common advance-fee fraud tactic. The presence of many links, including a malicious one, suggests an attempt to lead the user to a scam or phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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/wix?keyword=a+spy%2527s+guide+to+strategy
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/9608/8481/files/sozefudawarikodaretiv.pdf
    • https://cdn.shopify.com/s/files/1/0432/4678/0566/files/basic_english_grammar_for_beginners_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0433/7234/7550/files/pezijusajotimemogilibibi.pdf
    • https://cdn.shopify.com/s/files/1/0427/9838/3260/files/c_programs_interview_questions_and_answers_for_freshers.pdf
    • https://cdn.shopify.com/s/files/1/0433/4354/4488/files/nesilawifitofakev.pdf
    • https://cdn.shopify.com/s/files/1/0431/7508/4193/files/38066934625.pdf
    • https://static.usrfiles.com/ugd/b8c837_47654f1dcbf84b999d6314e99299b14a.pdf
    • https://static.usrfiles.com/ugd/b8c837_c61a0aee4fac4d42a7e57be25f962646.pdf
    • https://static.usrfiles.com/ugd/12f4eb_cf43e7e29f564020b31bbecd34ec7f5f.pdf
    • https://static.usrfiles.com/ugd/33a2e4_85b9239838de45e3a40a79a9faa180bc.pdf
    • https://static.usrfiles.com/ugd/3f0e57_5a4053f7473a447fbe202d1a57acfddb.pdf
    • https://static.usrfiles.com/ugd/191a6d_9e248dbbcaf14d19b1ab392ef34118dc.pdf
    • https://static.usrfiles.com/ugd/b8c837_104ba1b2b00b40cab1152d3abcee4455.pdf
    • https://static.usrfiles.com/ugd/b8c837_3bf7263bb05a4677a9a3ee81b261f641.pdf
    • https://static.usrfiles.com/ugd/b8c837_f7a3534579aa4e209ca9ee22a505bfdb.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006547.bin
9ad949b417e268145386534166ae49ef7ffe769ca8755636b71ee35f3ad914a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6547 5220 bytes
font_01_sfnt_off00007720.bin
2955403c81194d5fa551b0d246cc026681779de0bb0e947946cb043a1ab5834b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7720 10072 bytes

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