PDF malware analysis — malicious · 550dba9a07121b03

MALICIOUS

PDF

47.8 KB Created: 2020-08-11 08:51:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: addc931361909320513eb5ba1d310ccc SHA-1: 49fff6d8f3a876edc065524c923ab42a75fe2420 SHA-256: 550dba9a07121b03ff786500c9be32c5a27a4130a23b184096dccb24576c3b5a

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF was flagged for containing a malicious redirector link and a large number of external PDF links, suggesting a link farm or SEO poisoning attack. The primary malicious URL identified is https://ttraff.ru/pify?keyword=introducing+liberation+theology+pdf. The document body contains garbled text but includes the same malicious URL and a benign Shopify URL. 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.ru/pify?keyword=introducing+liberation+theology+pdf
- http://velakad.supportingpresence.com.au/uploads/1/3/2/6/132695569/fumarodaxosumal-jugezanujig-zoberu-rulapagezep.pdf
- http://files.daviessurveys.com/uploads/1/3/0/7/130740521/xinimone_gupogi_wisufa.pdf
- http://files.ruggedcrossfineartwoodworking.com/uploads/1/3/1/3/131398334/zufob.pdf
- http://files.areyouinjax.com/uploads/1/3/0/7/130738596/musumered.pdf
- https://cdn.shopify.com/s/files/1/0431/5299/8556/files/75114587993.pdf
- https://cdn.shopify.com/s/files/1/0437/4790/1592/files/53486762412.pdf
- https://cdn.shopify.com/s/files/1/0434/0360/8214/files/42646385970.pdf
- https://cdn.shopify.com/s/files/1/0440/2728/1558/files/congenital_hypothyroidism.pdf
- https://cdn.shopify.com/s/files/1/0430/2569/4883/files/67965333715.pdf
- https://cdn.shopify.com/s/files/1/0433/5904/3749/files/alaska_air_guardian_contact_form.pdf
- https://cdn.shopify.com/s/files/1/0437/6916/8021/files/anatomie_et_histologie_de_l_oeil.pdf
- https://cdn.shopify.com/s/files/1/0431/5709/4559/files/83277824093.pdf
- https://cdn.shopify.com/s/files/1/0434/8477/4552/files/lewamanafinufa.pdf
- https://cdn.shopify.com/s/files/1/0432/2312/2084/files/winameloretegejifuxiz.pdf
- https://cdn.shopify.com/s/files/1/0432/6942/3269/files/negekudowamup.pdf
- https://cdn.shopify.com/s/files/1/0432/7414/1864/files/fuboje.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/
- https://cdn.shopify.com/s/files/1/0433/5904/3749/files/alaska_air_guardian_contact

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00007b4e.bin` `f958706cb1dc8ec691ffa302cbb937b6a6289f1270a831e00b6a5b1af82d990f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7B4E	5416 bytes
`font_01_sfnt_off00008db4.bin` `ab0d6f92bf3669794eefbe19dec3569fff6e4cedc774e7ff68f28674d09b2648`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8DB4	10104 bytes

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