PDF malware analysis — malicious · 28d8b03f2b74883e

MALICIOUS

PDF

117.0 KB Created: 2020-08-03 15:41:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b8152dbc82a57026f3f25815e27ec6a3 SHA-1: f280c11ce7257f54fe122d555614b57ec2301f07 SHA-256: 28d8b03f2b74883ec353198b946efb16270783cb565c75de72511fdc493d5acc

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to ttraff.com. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the target URL, suggesting a lure to download or view a PDF, which instead leads to malicious infrastructure.

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/pify?keyword=bleak+house+full+text+pdf
- http://files.sancreedparishcouncil.org/uploads/1/3/0/7/130738562/sipemafujevukaf.pdf
- http://files.makeityoursbyalex.com/uploads/1/3/0/7/130738996/9394199.pdf
- http://files.guardianwildlifeservices.com/uploads/1/3/1/4/131438137/22022fa4f0e09.pdf
- http://files.desantedesigns.com/uploads/1/3/0/9/130969999/xutefoxesedeju-xinir-jisasaf.pdf
- http://files.maskcarabeautycolormatchgina.com/uploads/1/3/1/3/131380845/noxonajaxel.pdf
- https://cdn.shopify.com/s/files/1/0428/4026/0775/files/lanepumivejekikulimu.pdf
- https://cdn.shopify.com/s/files/1/0431/9713/7056/files/sefilupub.pdf
- https://cdn.shopify.com/s/files/1/0434/0721/2709/files/49895380298.pdf
- https://cdn.shopify.com/s/files/1/0430/0016/8607/files/muzomutujojopumoxetoxof.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/98012128422.pdf
- https://cdn.shopify.com/s/files/1/0430/5525/1605/files/sufadupekibirek.pdf
- https://cdn.shopify.com/s/files/1/0427/7580/6119/files/29999475096.pdf
- https://cdn.shopify.com/s/files/1/0434/8982/0836/files/litag.pdf
- https://cdn.shopify.com/s/files/1/0429/1903/5033/files/releboge.pdf
- https://cdn.shopify.com/s/files/1/0432/5530/0249/files/38755523729.pdf
- https://cdn.shopify.com/s/files/1/0429/9423/7589/files/riruled.pdf
- https://cdn.shopify.com/s/files/1/0431/0132/3420/files/24535051282.pdf
- https://cdn.shopify.com/s/files/1/0435/1967/2472/files/22829883206.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_off0001913f.bin` `4eccc05e09a5a1254f8d618a4315f7b4f6fbf69779d0b34c68c7a47bf95609c7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1913F	5212 bytes
`font_01_sfnt_off0001a306.bin` `0d5d7b4eceba1da97310bf565fe418b9d768010fb3dcb4163efeee14e60f34de`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1A306	10448 bytes

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