PDF malware analysis — malicious · a26c502514eb4bdf

MALICIOUS

PDF

42.9 KB Created: 2020-08-05 02:19:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9b61a0fdbd71cf38aa9d91e373ca369a SHA-1: 60c8cdec2fca1f8234f1c8c58cea23875ab04be3 SHA-256: a26c502514eb4bdff25506566dc0e2849836539447d45433543d8c2725ec088b

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic indicates that the PDF links to known malicious redirector infrastructure, specifically 'https://ttraff.cc/pify?keyword=approximation+questions+pdf+for+sbi+po+2020'. The document body itself appears to be a mix of legitimate-looking text and obfuscated content, likely intended to mask the malicious links. 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=approximation+questions+pdf+for+sbi+po+2020
- http://files.karmicfreedom.com/uploads/1/3/2/7/132710795/zoluseratakeb-bebiwug.pdf
- http://files.jlvilloni.com/uploads/1/3/0/9/130969026/547cf.pdf
- http://files.learnasa.com/uploads/1/3/0/7/130740073/9448754.pdf
- https://cdn.shopify.com/s/files/1/0432/8918/2376/files/xeladeviwinavura.pdf
- https://cdn.shopify.com/s/files/1/0431/5453/8658/files/38702593782.pdf
- https://cdn.shopify.com/s/files/1/0427/7701/8524/files/82857357737.pdf
- https://cdn.shopify.com/s/files/1/0437/2103/1832/files/numabib.pdf
- https://cdn.shopify.com/s/files/1/0433/6212/3941/files/88277163516.pdf
- https://cdn.shopify.com/s/files/1/0432/9016/5403/files/soda_license_key_generator.pdf
- https://cdn.shopify.com/s/files/1/0431/5624/2581/files/github_discard_changes.pdf
- https://cdn.shopify.com/s/files/1/0437/7244/4823/files/20337224978.pdf
- https://cdn.shopify.com/s/files/1/0432/9812/8036/files/67981716748.pdf
- https://cdn.shopify.com/s/files/1/0432/7741/8656/files/xakujesu.pdf
- https://cdn.shopify.com/s/files/1/0428/1643/8438/files/puvaxorevaveribo.pdf
- https://cdn.shopify.com/s/files/1/0434/4994/2176/files/19885974463.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00005c2f.bin` `d87789d646c1cc53ad3dd86ee71dd4d0a6b19525345b7a90aa2f736b1dc0b1d7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5C2F	5752 bytes
`font_01_sfnt_off00006fa1.bin` `c5524429193f9461341c074967154809dee17897e959c6450093ffb87b5f8d9d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6FA1	10376 bytes
`font_02_sfnt_off00009316.bin` `11bf571f0af05367446b2020c2f1c6267491649bc48117454eca19867f219dc9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9316	2752 bytes

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