Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee7087fe90847665…

MALICIOUS

PDF

53.7 KB Created: 2020-08-30 05:31:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d05ebce10285e0c3833de71d2417f0b4 SHA-1: 5b15535a55b50a6b28ca498e523c9b0ea76a09ae SHA-256: ee7087fe90847665d881b79d7beea6f69c5556c196244d907324dcf28f8c286e
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF document contains a link that redirects to a known malicious domain, ttraff.com, disguised with a search query. The document body is heavily obfuscated but contains the same malicious URL and numerous other URLs pointing to Shopify, likely as part of a link farm to improve SEO for malicious content. The ML classifier strongly indicates maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=when+im+gone+mp3+song
    • https://cdn.shopify.com/s/files/1/0438/9024/5787/files/muraxukidag.pdf
    • https://cdn.shopify.com/s/files/1/0432/5936/3488/files/automatismo_cardiaco.pdf
    • https://cdn.shopify.com/s/files/1/0437/1572/3414/files/logical_thinking_development.pdf
    • https://cdn.shopify.com/s/files/1/0431/7570/6788/files/13093360666.pdf
    • https://cdn.shopify.com/s/files/1/0430/2559/6573/files/81242275125.pdf
    • https://cdn.shopify.com/s/files/1/0430/2825/0781/files/fulizukepepexewizuvo.pdf
    • https://cdn.shopify.com/s/files/1/0435/5876/4696/files/bopilesumiwiko.pdf
    • https://cdn.shopify.com/s/files/1/0441/3505/5512/files/illuminatiam_book.pdf
    • https://cdn.shopify.com/s/files/1/0429/7300/3939/files/jafipamasobovu.pdf
    • https://static.usrfiles.com/ugd/b9801a_c0f180e5085d451db2ba4153357e1181.pdf
    • https://static.usrfiles.com/ugd/b8c837_f3b86c16dfe740c0a94601885d5d65a7.pdf
    • https://static.usrfiles.com/ugd/b8c837_126e144c5ecc440babe735d92e7e5aeb.pdf
    • https://static.usrfiles.com/ugd/9c0842_9ed9c56d8335468e96fa68813267c2b0.pdf
    • https://static.usrfiles.com/ugd/0d2908_624ef111da534677a2aa16473f0ed8d8.pdf
    • https://static.usrfiles.com/ugd/1a89c8_08fd1ecec66a44b1aba22a9b91bd31d5.pdf
    • https://static.usrfiles.com/ugd/913720_2573df94e578480eb3cc31663b920e77.pdf
    • https://static.usrfiles.com/ugd/4b7290_c8f86b016d3a42369243a801adb073c9.pdf
    • https://static.usrfiles.com/ugd/b8c837_34fa6af42e7b403eb7b92b7bac34a2cf.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/
    • https://static.usrfiles.com/ugd/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off00009fba.bin
a52961dd105f474d8e4a2ef684949588ca8216b603d3e4cc3c30cf26c4d04047		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x9FBA 23440 bytes
font_00_sfnt_off00006b4f.bin
31cf6e3e517e91f47fdf75fdb553442e9021109b36acee30e3a9e37270c374ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B4F 5072 bytes
font_01_sfnt_off00007c80.bin
c2a1a94511564616161586e0cfb78cdc17411db23f46b6654015e033bfe33c78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C80 10632 bytes

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