Malicious PDF — malware analysis report

Static analysis result for SHA-256 02cc66c4f2ed477b…

MALICIOUS

PDF

47.3 KB Created: 2020-08-31 06:04:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b86a7acf8042375bd7ab27e9f8034e53 SHA-1: 25a883cd4c600ceb87c98eee1092cf2c61e55a5f SHA-256: 02cc66c4f2ed477bd984da32e1e0f58919580c62631301bebaea2b047cc509fe
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains embedded links and text that mimic a movie streaming service, designed to trick the user into clicking a malicious URL. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly indicates this is an advance-fee fraud attempt. The presence of multiple links to external PDF files, some of which are flagged as redirectors, suggests a multi-stage attack aiming to deliver a payload or further phish the user.

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.ru/wix?keyword=rent+full+movie+123
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_fee29e4da00c49209fcdac9b16deb3f8.pdf
    • https://static.usrfiles.com/ugd/ea9bdf_5f7446c4d96b457088d892919f737995.pdf
    • https://static.usrfiles.com/ugd/b8c837_cc2df725d53a4123ae0e48095199d0fb.pdf
    • https://static.usrfiles.com/ugd/88a84f_018f8b9b37b34c33815e82ce409b1321.pdf
    • https://static.usrfiles.com/ugd/e4ff69_79c83c8f3c804c25ac1cbef0b9e9c9d3.pdf
    • https://static.usrfiles.com/ugd/cb2bed_50459a8189f4468292ffcdddbf29c947.pdf
    • https://static.usrfiles.com/ugd/b8c837_c2787976b83f4da9942292be51d2a524.pdf
    • https://static.usrfiles.com/ugd/b8c837_04eb9e0fcc4344748837390be136e3eb.pdf
    • https://static.usrfiles.com/ugd/50c35f_9c8aa4d8f71645d797b1145e42473a15.pdf
    • https://static.usrfiles.com/ugd/ac51ce_7404c567bbb143a3b6f2b1e23d715608.pdf
    • https://static.usrfiles.com/ugd/3b7182_8a158880ccf94e3abeddfb49007cb9e1.pdf
    • https://static.usrfiles.com/ugd/f4de5e_dabaac0c40da44618ac245adb35a7db5.pdf
    • https://static.usrfiles.com/ugd/b3bc21_8648c67fbb014d20922afa1dd1866454.pdf
    • https://cdn.shopify.com/s/files/1/0434/3591/7473/files/bpsc_64_answer_key_set_b.pdf
    • https://cdn.shopify.com/s/files/1/0460/2032/9631/files/92595101131.pdf
    • https://cdn.shopify.com/s/files/1/0440/2737/9877/files/puxobumatekekapapuz.pdf
    • https://cdn.shopify.com/s/files/1/0436/1139/0115/files/xosemanipa.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_off00007d1d.bin
e36fbac058468c744615db5d1671b4903f517917c43f083d0afb1e33321bda7a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D1D 4844 bytes
font_01_sfnt_off00008da5.bin
8f102bdfb663a66b1cfc4392d16808fe30357baf964bc05f0e1f5cefb1acaba7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DA5 10364 bytes

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