Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0bb9c2b6e847624…

MALICIOUS

PDF

51.6 KB Created: 2020-09-18 02:03:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c05626677c5387d6023c01d3d94affb5 SHA-1: 8cc5ed706d49e8e0e187960ca7db90a0293c1aa3 SHA-256: d0bb9c2b6e8476243bb9c63942495fc12eba567b06028fe331387fdd2f11291a
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a search result for 'opera omnia apk hack'. It also features a large number of embedded links, many pointing to potentially malicious domains, indicating a link farm strategy. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.me/wix?keyword=opera+omnia+apk+hack
    • http://dawazi.3handstephen.com/uploads/1/3/0/9/130969280/b71c931a.pdf
    • http://files.scubajohns.com/uploads/1/3/2/8/132815807/3512868.pdf
    • http://gakel.howegate.co.uk/uploads/1/3/0/8/130874153/c4f7f5f65d5c93.pdf
    • http://xufatoge.cassandraarthur.com/uploads/1/3/2/3/132303027/wimetisetig.pdf
    • http://files.spiritualitycircle.com/uploads/1/3/1/4/131453252/9598448.pdf
    • https://3d8ce5be-d460-43d5-89fe-f445e07a0e22.filesusr.com/ugd/0182ef_c19d033ff38248a4b7de0be12384ea11.pdf?index=true
    • https://a9443ca7-6edc-4220-bbd0-0b5636439e1e.filesusr.com/ugd/067ecb_39dfa890fc314254be5aa20f24c6121d.pdf?index=true
    • https://f9267911-05f0-4980-a6bc-0f6afddccca1.filesusr.com/ugd/bc4951_bfbc2724c89b470286d08d519cfaa9f1.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0436/1653/4690/files/rent_to_own_lease_agreement.pdf
    • https://cdn.shopify.com/s/files/1/0432/1892/7778/files/xisuretomaviwesofegilu.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006407.bin
a480656231e51d7bbf7fe9c2591463260e71d96b4422e34156576ddd11e6dfee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6407 5052 bytes
font_01_sfnt_off000074fd.bin
c6c4d8bdbc706f09806eaab3f787634c250c5662a6b37a5ca3cfe4fa92d3c3e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74FD 7360 bytes
font_02_sfnt_off00008904.bin
695a9e1e43614090ac8d808a517d1b239efbdae076f5b764a9712cdb30f78106		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8904 10372 bytes
font_03_sfnt_off0000ac94.bin
d2619b9a2a7dec81ecbbf05c496b7f5492bc56d5eefc2cd48183daaf603cb6ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC94 16160 bytes

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