PDF malware analysis — malicious · 300d8333aaa65413

MALICIOUS

PDF

51.4 KB Created: 2020-08-15 12:15:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: bb22cf6873c464691264b0ead1e6ac01 SHA-1: ef1a57af4af66ccc23c86cacd7589980b223dc4a SHA-256: 300d8333aaa65413dcf78b4ab9a07aabc19c297449ae72f975052c6cb82f1b48

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wb?keyword=tamil%20nadu%20current%20affairs%202019%20pdf%20download'. The document body also contains this URL, presented as a lure for downloading a PDF. The ML classifier strongly flagged this PDF as malicious. The presence of a link farm further indicates malicious intent.

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/wb?keyword=tamil%20nadu%20current%20affairs%202019%20pdf%20download
- http://files.creativereadingandwriting.org/uploads/1/3/0/8/130813846/tigano.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kofuka.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nemevisofopanufu.pdf
- https://cdn.shopify.com/s/files/1/0433/0595/9574/files/76972054357.pdf
- https://cdn.shopify.com/s/files/1/0432/3255/9267/files/kanosiraluwesi.pdf
- https://cdn.shopify.com/s/files/1/0432/4684/6107/files/60657590717.pdf
- https://cdn.shopify.com/s/files/1/0427/5650/5756/files/65363426394.pdf
- https://cdn.shopify.com/s/files/1/0435/3441/8075/files/28283029342.pdf
- https://cdn.shopify.com/s/files/1/0436/2534/9283/files/mtg_biology_books_free_download.pdf
- https://cdn.shopify.com/s/files/1/0434/9024/6822/files/calibration_procedures.pdf
- https://cdn.shopify.com/s/files/1/0431/5211/3820/files/sklearn_classification_report_recall.pdf
- https://cdn.shopify.com/s/files/1/0432/2977/3982/files/beginning_programming_for_dummies.pdf
- https://cdn.shopify.com/s/files/1/0433/6163/2406/files/chemistry_atomic_structure_questions.pdf
- https://cdn.shopify.com/s/files/1/0432/3213/3278/files/30042516428.pdf
- https://cdn.shopify.com/s/files/1/0440/6044/2774/files/sivizitununov.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.

Filename	Kind	Source	Size
`font_00_sfnt_off000061f6.bin` `14d89dbde9110ba35d33b51f7b32ed9f49bfddbcd1bbbd8c3007546761ccf5cd`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x61F6	5824 bytes
`font_01_sfnt_off000075bd.bin` `079872e81efd9fa54dba0336c73ceac513e5acad486066bddb98844e168a0a26`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x75BD	11864 bytes
`font_02_sfnt_off000093f3.bin` `3af9a4ff939c7d2713cb89a72ed94ed52f30576f1d9dadd5bb1d28e53c3fb5ee`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x93F3	14044 bytes

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