Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddeabf07aa3dd1a8…

MALICIOUS

PDF

40.5 KB Created: 2020-09-07 00:52:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 001912be45bf61f340ee90033939fc6d SHA-1: 9d415f1bcdfedffbb4df0c2c40fceb4b6a71a61a SHA-256: ddeabf07aa3dd1a8f9966d826e7adf484fdbb8e053a234fbe57158ef2729be2c
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one prominent link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/wix?keyword=microsoft+onenote+for+android+tablet', suggesting a lure to trick users into clicking through to a potentially malicious site. The ML classifier also strongly flagged this PDF as malicious.

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.com/wix?keyword=microsoft+onenote+for+android+tablet
    • https://static.usrfiles.com/ugd/22bf55_a082d2ff4d474c58bd486ca1f9e05e41.pdf
    • https://static.usrfiles.com/ugd/c3548c_344cf371848b4acd9401657388ebc763.pdf
    • https://static.usrfiles.com/ugd/b8c837_8873e0fd010140bca32eb23bcc26145e.pdf
    • https://static.usrfiles.com/ugd/0e9fc2_386f21d0b57a491cae484b47a2bbd1aa.pdf
    • https://static.usrfiles.com/ugd/062c90_6fb3a02dd7ec4b009423ffa85a7ee60f.pdf
    • https://static.usrfiles.com/ugd/d2b720_dacd9c536f21479a9aee604ab45ad07d.pdf
    • https://static.usrfiles.com/ugd/3e5d97_45ee2d66269340a19b6f239e629ad39b.pdf
    • https://static.usrfiles.com/ugd/3e0cb9_8d9e40ddaf494a65a18265610c1c5325.pdf
    • https://static.usrfiles.com/ugd/17beed_30985feaff4b46f2a60a787848790064.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gimuwuwizarisatin.pdf
    • https://cdn.shopify.com/s/files/1/0430/2834/9085/files/98680642536.pdf
    • https://cdn.shopify.com/s/files/1/0432/7948/3048/files/70811157842.pdf
    • https://cdn.shopify.com/s/files/1/0433/9430/2117/files/tukerajodidodomewepeka.pdf
    • https://cdn.shopify.com/s/files/1/0460/4185/8212/files/esempio_di_algoritmo_informatica.pdf
    • https://cdn.shopify.com/s/files/1/0430/7150/4537/files/2011_hyundai_santa_fe_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/0707/4723/files/pipuvobidaralufaxaduxu.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_off00006100.bin
f72fd3c8182ae4e7da97fce3f4bca7bd4751024224daa2e375adde012a6e3f1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6100 5160 bytes
font_01_sfnt_off000072a6.bin
9ee5864c9daba8a0ef9d429b8e83ffb15fb779970e53800ec81dbeb6d1118f7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72A6 10040 bytes

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