Malicious PDF — malware analysis report

Static analysis result for SHA-256 dce0a84455e6b5d0…

MALICIOUS

PDF

45.5 KB Created: 2020-09-10 09:40:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 294edec5d995cd50578477aa045b5bb0 SHA-1: e503f2dd473fe129ae41a91ac0e93c8811312d3d SHA-256: dce0a84455e6b5d0b31828f922a33b6336ea98c21970ebe226efc15195f1165e
130 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The presence of a 'download button' heuristic and the embedded URL further support a malicious intent. The document body contains garbled text but includes the suspicious URL, suggesting a lure to download or access content from the malicious redirector.

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.
  • 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.link/wix?keyword=ac+market+apk+file++ios
    • http://files.sbcchapelhill.com/uploads/1/3/0/7/130740586/2839624.pdf
    • http://files.bandorlando.com/uploads/1/3/1/0/131071231/jubuxatugexo.pdf
    • http://files.ideaingramhills.com/uploads/1/3/1/4/131452942/zobivibasojazuditije.pdf
    • http://getelefu.mogosoapemporium.com/uploads/1/3/0/7/130775958/vefesikijadogap_zurapivufa.pdf
    • https://cdn.shopify.com/s/files/1/0433/4164/3928/files/pdf_unlock_file_open.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/luburilukobuxafegi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7511/6964/files/telephone_preference_service_report_nuisance_calls.pdf
    • https://cdn.shopify.com/s/files/1/0435/2920/7957/files/bebijuxisavipis.pdf
    • https://cdn.shopify.com/s/files/1/0433/2955/2552/files/bugimud.pdf
    • https://cdn.shopify.com/s/files/1/0430/7078/3645/files/92689460047.pdf
    • https://cdn.shopify.com/s/files/1/0440/0971/7910/files/10334269396.pdf
    • https://static.usrfiles.com/ugd/1f5cef_8b7229c889b24c1e845c25068301f5f3.pdf
    • https://static.usrfiles.com/ugd/79cb75_475bb2b26b3649dcb18269859b320423.pdf
    • https://static.usrfiles.com/ugd/c836c3_40a81a7287c64874b8bd4a2f908c78f4.pdf
    • https://static.usrfiles.com/ugd/b5aed9_6742fec6e48f416bb6835de891a363a9.pdf
    • https://static.usrfiles.com/ugd/225520_9c68a0d3fb844b34acf8ef973391a9cc.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_off00006782.bin
7aab09da6a8a761c5174a779f55a8bad40c37bb3615db970106578f12205232d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6782 4896 bytes
font_01_sfnt_off0000781e.bin
92fd93e723b06bb121d16cbe0aa4b780bd4feba77a9ca3887dfc0828ed787020
pdf-font-stream PDF embedded font (sfnt) at offset 0x781E 10216 bytes
font_02_sfnt_off00009b2b.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x9B2B 4324 bytes