PDF malware analysis — malicious · 7f712d02317abf26

MALICIOUS

PDF

37.3 KB Created: 2020-09-01 16:57:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a5ea74474312f2ad8a2edd8960ed4e62 SHA-1: 99d66bd48ac2a45313022485e77bcc036e618378 SHA-256: 7f712d02317abf2653ed8d7c34cb2487ea964a9cfdedcd448a7145f058feee75

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.club'. The document body, though heavily obfuscated, contains text related to 'compass rose worksheets grade 1' and the malicious URL, suggesting a lure to disguise malicious activity. The ML classifier strongly indicates maliciousness, and the presence of a malicious redirector link is a high-confidence indicator of a phishing or redirection attack.

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.club/wix?keyword=compass+rose+worksheets+grade+1
- https://cdn.shopify.com/s/files/1/0428/1466/8959/files/indesign_report_layout.pdf
- https://cdn.shopify.com/s/files/1/0428/2771/0630/files/biology_textbook_class_10.pdf
- https://cdn.shopify.com/s/files/1/0437/9328/5277/files/movijadataxema.pdf
- https://cdn.shopify.com/s/files/1/0427/9736/7452/files/75728694109.pdf
- https://static.usrfiles.com/ugd/b8c837_99ad1b897190417794d4720556388221.pdf
- https://static.usrfiles.com/ugd/e481ce_89c896fce3914163885271f46a74993f.pdf
- https://static.usrfiles.com/ugd/b8c837_61e9ac62fda44b49bbb4f0c32d5f05b1.pdf
- https://static.usrfiles.com/ugd/2f7815_8f4fe683274a4ba295787e773df8f837.pdf
- https://static.usrfiles.com/ugd/9e41f0_6aa451392159487c8e9a14be4caff155.pdf
- https://static.usrfiles.com/ugd/e4ff69_d5dff610666e4556a3ef04d64e2bd97f.pdf
- https://static.usrfiles.com/ugd/55cc32_b34bd94e768c41138f05302181833588.pdf
- https://static.usrfiles.com/ugd/b8c837_84925f555f054e87bcf7bacf60537fb1.pdf
- https://cdn.shopify.com/s/files/1/0434/7153/6294/files/descriptive_phrases_for_emotions.pdf
- https://cdn.shopify.com/s/files/1/0434/5649/5783/files/maxizusexesizanatirub.pdf
- https://cdn.shopify.com/s/files/1/0431/6836/6746/files/last_1_week_weather_report.pdf
- https://cdn.shopify.com/s/files/1/0440/3894/6981/files/77268333845.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_off000049b0.bin` `81a94f89a9077c74f8ed3233530655f331844f0a22c2e0ef2b48ceda21579641`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x49B0	5456 bytes
`font_01_sfnt_off00005c23.bin` `beca55f5aff80dd884569e51cfa396b695bd2c8dd25b36bdc058d246084e11b8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5C23	13688 bytes

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