PDF malware analysis — malicious · 2af4c3210766467c

MALICIOUS

PDF

50.5 KB Created: 2020-08-12 18:09:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 98329bf8177fa205d184fe6e80510aa1 SHA-1: 361a42fba0d4682ab25422ef5c4f9e4213a37973 SHA-256: 2af4c3210766467c4e848462399efa1b85f591b49dc55cea9488956df29fe7a5

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 many links pointing to Shopify domains, likely to appear legitimate. One critical heuristic indicates a PDF redirector link to `ttraff.cc`, which is known malicious infrastructure. The document body, though heavily obfuscated, contains the same URL, suggesting the primary intent is to trick the user into clicking this malicious link. No scripts were extracted from this sample.

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=techniques+used+in+creative+writing+pdf
- http://files.englishmastiffrescue.net/uploads/1/3/1/4/131453784/7595924.pdf
- http://files.ringsnbling5.com/uploads/1/3/0/9/130969545/652964281.pdf
- http://files.venusevanswinters.com/uploads/1/3/0/8/130813885/xadapiru.pdf
- http://files.greniereng.com/uploads/1/3/0/7/130776386/sosowem.pdf
- http://zirano.bettereatingcoach.com/uploads/1/3/1/0/131071164/wibefeguge_kufipataduwesax_zepudolija.pdf
- http://files.englishmastiffrescue
- https://cdn.shopify.com/s/files/1/0429/6579/4965/files/29104475662.pdf
- https://cdn.shopify.com/s/files/1/0429/6055/2085/files/99234900300.pdf
- https://cdn.shopify.com/s/files/1/0433/6641/6534/files/vivowupemimiditaradosas.pdf
- https://cdn.shopify.com/s/files/1/0432/3924/3931/files/biomass_energy_conversion.pdf
- https://cdn.shopify.com/s/files/1/0437/8283/2280/files/motesif.pdf
- https://cdn.shopify.com/s/files/1/0431/1479/1068/files/fajubesitip.pdf
- https://cdn.shopify.com/s/files/1/0430/1769/9477/files/gulobigurukovudebuze.pdf
- https://cdn.shopify.com/s/files/1/0429/2096/8351/files/cambridge_igcse_maths_past_papers.pdf
- https://cdn.shopify.com/s/files/1/0435/5820/7643/files/mabinogi_blacksmithing_guide.pdf
- https://cdn.shopify.com/s/files/1/0435/7623/0051/files/kesawen.pdf
- https://cdn.shopify.com/s/files/1/0434/9159/0308/files/77560680563.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_off000084a8.bin` `b5fd3c0f139b63996a4e564490dcd6ecc622599d35d0f89802643541dc25ae99`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x84A8	5612 bytes
`font_01_sfnt_off000097c2.bin` `faa46b71c0fc5d1dc77517cf5b67776899c8fb18320c385e8a810932fcf3a11e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x97C2	10908 bytes

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