PDF malware analysis — malicious · ef488510f165b762

MALICIOUS

PDF

42.2 KB Created: 2020-09-19 00:24:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 98b3892345c6b95ee0bb4eb6fc28396f SHA-1: dd3653c33afd31e44a755838b9d5a21fe591a76a SHA-256: ef488510f165b76295f0ac8fa716b14f333b5049da63b493a28bd8992a6cfca2

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.me, which is disguised as a worksheet title. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to Shopify, likely to obscure the malicious destination. The ML classifier strongly indicated maliciousness. No scripts were extracted, but the presence of the malicious redirector URL is a high-confidence indicator of a phishing or malware distribution attempt.

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=properties+of+ionic+compounds+worksheet
- https://cdn.shopify.com/s/files/1/0435/7508/3167/files/gedovekiru.pdf
- https://cdn.shopify.com/s/files/1/0428/5700/5215/files/wuxuni.pdf
- https://cdn.shopify.com/s/files/1/0431/7691/9200/files/parent_functions_and_transformations_worksheet.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dilos.pdf
- https://cdn.shopify.com/s/files/1/0430/8559/4775/files/types_of_antibiotic_resistance.pdf
- https://cdn.shopify.com/s/files/1/0433/9659/5861/files/archery_arm_guard_template.pdf
- https://cdn.shopify.com/s/files/1/0429/6769/5509/files/38250330040.pdf
- https://cdn.shopify.com/s/files/1/0433/0379/6894/files/neet_2020_books_free_download.pdf
- https://cdn.shopify.com/s/files/1/0430/6170/6903/files/calendario_laboral_2020_leon.pdf
- https://cdn.shopify.com/s/files/1/0431/0332/2261/files/best_bollywood_movies_sites_2018.pdf
- https://cdn.shopify.com/s/files/1/0437/1300/3674/files/abraham_family_tree.pdf
- https://cdn.shopify.com/s/files/1/0432/6473/7433/files/87991582524.pdf
- https://6aecc510-b20a-4eb4-801b-713bcf2c831d.filesusr.com/ugd/aff7ca_850ae4063c53445a8f3acf25e95f9fe9.pdf?index=true
- https://58140ead-10dd-4805-bd59-887c9d694dad.filesusr.com/ugd/fb41f9_84a97242595041018f037b735e038fbd.pdf?index=true
- https://7645fcdd-6be6-4d89-a106-ce2ed54fea9d.filesusr.com/ugd/804ff6_43b389a0df574028b252bb078dfa4429.pdf?index=true
- 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.

Filename	Kind	Source	Size
`font_00_sfnt_off00006768.bin` `2356780371ef494354cfae03d3d75a1f36d957320b0c741098d1b746b5731155`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6768	5312 bytes
`font_01_sfnt_off00007964.bin` `dfacfe8a685deeca1f00919fcfc9b3b6737c7e4fb0fe7e8eaa221a69c672e8ee`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7964	10100 bytes

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