PDF malware analysis — malicious · 82d2b322871357c8

MALICIOUS

PDF

40.1 KB Created: 2020-07-28 14:33:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a177002562867192235fef85671156c9 SHA-1: 2ade0770609cbc5670069f8fb735a761acc4f0f7 SHA-256: 82d2b322871357c8bfdff9d911a851814374b5243bcad935cc275219f7f6668d

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, many pointing to Shopify domains, which is indicative of a link farm. One of these links, https://ttraff.ru/pify?keyword=blockly+turtle+level+9+answer, is flagged as a malicious redirector. The ML classifier also strongly suggests maliciousness. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of a malicious redirector and link farm strongly suggests 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.ru/pify?keyword=blockly+turtle+level+9+answer
- http://files.iodeontario.ca/uploads/1/3/2/8/132814387/65f17559056e1.pdf
- http://files.mrwingard.com/uploads/1/3/0/7/130740571/5877627.pdf
- http://files.donnylambeth.com/uploads/1/3/1/4/131454304/a7db73242ac39b6.pdf
- https://cdn.shopify.com/s/files/1/0432/4750/1474/files/45027958183.pdf
- https://cdn.shopify.com/s/files/1/0430/5531/7149/files/kuvunikesisak.pdf
- https://cdn.shopify.com/s/files/1/0432/1358/6600/files/35988644600.pdf
- https://cdn.shopify.com/s/files/1/0430/1576/6177/files/xoraporapulijogetulanefig.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bovabokuvuxinapuwukiberem.pdf
- https://cdn.shopify.com/s/files/1/0431/8514/3969/files/gerutibuxebapozenutizaji.pdf
- https://cdn.shopify.com/s/files/1/0430/3860/5461/files/zibuvoderaxuvasozupiz.pdf
- https://cdn.shopify.com/s/files/1/0433/1415/1589/files/78628016615.pdf
- https://cdn.shopify.com/s/files/1/0434/5249/8070/files/wuzevew.pdf
- https://cdn.shopify.com/s/files/1/0434/4496/1436/files/rusidorodopo.pdf
- https://cdn.shopify.com/s/files/1/0435/5152/2977/files/41633298287.pdf
- https://cdn.shopify.com/s/files/1/0438/0708/0605/files/ginowipoxoruder.pdf
- https://cdn.shopify.com/s/files/1/0434/0921/1557/files/37059665363.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_off00005f56.bin` `f430750e9bcef649c85527f59bae218ce728dad0dc6e13d5f722f0b77d4bca7f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F56	5152 bytes
`font_01_sfnt_off00007106.bin` `6b1a7bdae5e18d790d6fee5e7213b915d26c34c460d1de407207ca90903e8fd7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7106	10080 bytes

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