PDF malware analysis — malicious · 1a939e9258409ee4

MALICIOUS

PDF

65.1 KB Created: 2020-08-22 16:49:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: bbf7448c2da90e1dc2cb6ba576e1dc4e SHA-1: f784e249cc4759929cb26cfdafab0d383ee1293d SHA-256: 1a939e9258409ee44ba11e92fe2fb5b8fed4dbae027e16b4090c0c02e16510ea

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a significant number of embedded links, with heuristics indicating a link farm and redirection to known malicious infrastructure. The primary malicious URL identified is https://ttraff.cc/pify?keyword=ankylosing+spondylitis+pdf, which is likely used to direct users to further malicious content. The document body itself is heavily obfuscated and contains remnants of the malicious URL, suggesting it is part of the lure.

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.cc/pify?keyword=ankylosing+spondylitis+pdf
- http://tivinebos.texascottonginmuseum.org/uploads/1/3/1/4/131483083/xukolutu.pdf
- https://cdn.shopify
- https://cdn.shopify.com/s/files/1/0440/1908/9566/files/spyro_reignited_trilogy_skill_points_guide.pdf
- https://cdn.shopify.com/s/files/1/0441/4029/8392/files/90406521193.pdf
- https://cdn.shopify.com/s/files/1/0438/8074/3080/files/kezepajofivipoxexubari.pdf
- https://cdn.shopify.com/s/files/1/0434/0213/3671/files/jacoco_maven_plugin.pdf
- https://cdn.shopify.com/s/files/1/0434/5665/9621/files/bodybuilding_workouts_download.pdf
- https://cdn.shopify.com/s/files/1/0435/3346/7808/files/european_resuscitation_council_cpr_guidelines.pdf
- https://cdn.shopify.com/s/files/1/0431/5951/9387/files/python_3._4_3_32_bit.pdf
- https://cdn.shopify.com/s/files/1/0435/0600/8216/files/how_to_reset_kenmore_dishwasher.pdf
- https://cdn.shopify.com/s/files/1/0439/2937/0779/files/40756095671.pdf
- https://cdn.shopify.com/s/files/1/0431/8933/8276/files/mobajepapetoxofeput.pdf
- https://cdn.shopify.com/s/files/1/0429/7634/6266/files/zijigajitetel.pdf
- https://cdn.shopify.com/s/files/1/0431/5326/0706/files/gugusa.pdf
- https://cdn.shopify.com/s/files/1/0432/7761/5262/files/22050897306.pdf
- https://cdn.shopify.com/s/files/1/0434/1471/6572/files/40213287321.pdf
- https://cdn.shopify.com/s/files/1/0435/0866/2440/files/deaf_blindness.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000c25a.bin` `f4ca6b9f3a51a577f2d07d19c9295b55a2f458db706de7afb01bb7f079fa662d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC25A	5060 bytes
`font_01_sfnt_off0000d3b5.bin` `e829ef7d25b16e3dc6cfee8f6b16cf1a1e517cf53f121a4c0ee38be7ceccaa2c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD3B5	10352 bytes

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