Malicious PDF — malware analysis report

Static analysis result for SHA-256 aebbc6175905e3f5…

MALICIOUS

PDF

55.6 KB Created: 2020-08-14 16:15:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b48d031dc80578560d41e6707ca99bc5 SHA-1: d0862c31edf6a71ceb643dba6d237dd2dd61b1e2 SHA-256: aebbc6175905e3f58e8511d4217246c287d1d042ee957df383ecfca4c774dd3c
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a lure for sheet music, with embedded links pointing to a malicious redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the link's malicious nature. The document body, though heavily obfuscated, contains the malicious URL. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, likely for SEO manipulation or to host further malicious content.

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.
  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/pify?keyword=boogie+woogie+stomp+piano+sheet+music
    • http://files.manxfestivalchorus.com/uploads/1/3/1/4/131438177/6181704.pdf
    • http://wasig.mazzantpainting.com/uploads/1/3/2/6/132695675/bazek.pdf
    • http://files.dremilyleonard.com/uploads/1/3/1/6/131637919/pusiberujebu.pdf
    • http://sepamoba.stonycreekumc.org/uploads/1/3/1/8/131856998/67acbea4033762.pdf
    • http://files.amaranthineartist.com/uploads/1/3/0/9/130969654/9737451.pdf
    • https://cdn.shopify.com/s/files/1/0428/2338/5247/files/le_train_de_la_vie_jean_d_ormesson.pdf
    • https://cdn.shopify.com/s/files/1/0437/5350/4917/files/algebra_2_textbook_online.pdf
    • https://cdn.shopify.com/s/files/1/0430/1455/3763/files/6434236562.pdf
    • https://cdn.shopify.com/s/files/1/0438/9027/8568/files/army_rst_form.pdf
    • https://cdn.shopify.com/s/files/1/0429/9853/0202/files/xenutuzuleka.pdf
    • https://cdn.shopify.com/s/files/1/0430/9522/8565/files/16100763417.pdf
    • https://cdn.shopify.com/s/files/1/0431/7492/0347/files/tratamiento_de_anemia_en_el_embarazo.pdf
    • https://cdn.shopify.com/s/files/1/0434/6596/5718/files/tekax.pdf
    • https://cdn.shopify.com/s/files/1/0429/6245/2643/files/aristoteles_etica_nicomaco.pdf
    • https://cdn.shopify.com/s/files/1/0433/9014/0572/files/demyer_neurologic_examination_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/5725/0455/files/bapitajupeliwarokurujodo.pdf
    • https://cdn.shopify.com/s/files/1/0441/0654/7352/files/student_of_the_year_full_movie.pdf
    • https://cdn.shopify.com/s/files/1/0435/1010/4228/files/53457568723.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000096ef.bin
1f8e794657f33598ea80ee1ffc66be9d1f329790ea4cfcdeb73b6593a631c932		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96EF 5360 bytes
font_01_sfnt_off0000a918.bin
d54bee07c969618b887b1f46869642564f662339becb56d494c83456363ab96d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA918 12652 bytes

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