Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d19a4c334dc09c5…

MALICIOUS

PDF

121.7 KB Created: 2020-08-30 01:58:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f93001646d656ce1bbea1454beeb8ac0 SHA-1: 483c94c0685c1392778d5d9475737c2020abc9ef SHA-256: 4d19a4c334dc09c5c456a69b57f6ea20b99b9f1239375405310d009bb476a358
148 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a Kubota spare parts manual. The document also exhibits characteristics of a callback phishing lure, suggesting a social engineering attempt to trick the user into interacting with malicious content or providing sensitive information. The presence of a link farm further indicates a malicious intent to distribute or redirect users to harmful sites.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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.com/wix?keyword=kubota+d1105+spare+parts+manual
    • https://static.usrfiles.com/ugd/ce14f3_c36064c82992411bb933bf4772e0020b.pdf
    • https://static.usrfiles.com/ugd/cafc24_f89c189359bb4d28bd86cbfe1fa32de9.pdf
    • https://static.usrfiles.com/ugd/1c8c6c_f359171bbcf6499b900ecb67dfe0a65a.pdf
    • https://static.usrfiles.com/ugd/822ecd_a892eb17a9754e42a0cb0e661e808618.pdf
    • https://static.usrfiles.com/ugd/217d68_5ae3c92488a241eab85aa5c3919dd8d0.pdf
    • https://static.usrfiles.com/ugd/b8c837_86fce33d88d24af9b0187d99524497b9.pdf
    • https://static.usrfiles.com/ugd/b8c837_b7db22527f214238a72c8174f861dad6.pdf
    • https://static.usrfiles.com/ugd/314c35_e819f9db90f0472bb23745e66811a8e3.pdf
    • https://static.usrfiles.com/ugd/b8c837_0bb6548b729f4fb48e8f0db31111fd4e.pdf
    • https://cdn.shopify.com/s/files/1/0432/9422/8630/files/kevabize.pdf
    • https://cdn.shopify.com/s/files/1/0435/4464/1695/files/polarized_test_image.pdf
    • https://cdn.shopify.com/s/files/1/0433/8152/2599/files/24717605840.pdf
    • https://cdn.shopify.com/s/files/1/0435/1007/1448/files/broker_fee_agreement.pdf
    • https://static.usrfiles.com/ugd/b8c837_a87f3a1e86b047a29fc930a9d4ecd5e2.pdf
    • https://static.usrfiles.com/ugd/b8c837_c1c9d490aab846f5b80f94d44adeccb7.pdf
    • https://static.usrfiles.com/ugd/9219f8_69ae2a4dd7eb4f79b93edafb36ec2eef.pdf
    • https://static.usrfiles.com/ugd/87a178_81d6a5796f2740669e4230f51060f248.pdf
    • https://static.usrfiles.com/ugd/07625c_0902f4d2509d4c399a6d8862ffe48aef.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_off00018127.bin
43fcc186615cc72780e8e465cf1f857e2e8d4e25cc741bc27140ca0fd738ebac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18127 4460 bytes
font_01_sfnt_off000190dd.bin
a664d149c50206d050038fc767e0742fe845a287888850bbc71ff6b901e77692		 pdf-font-stream PDF embedded font (sfnt) at offset 0x190DD 5532 bytes
font_02_sfnt_off0001a392.bin
33dcf7951bf0b5d64d0555957adc7d0af51dfefa37f5198d3ce6c59263241f17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A392 17292 bytes

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