PDF malware analysis — malicious · 30bb8255c41dbda8

MALICIOUS

PDF

57.4 KB Created: 2020-12-18 00:34:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: cf722eaa77c52fd2c2d8acd2fd34b2fc SHA-1: e566fc180fd204afbeca8a7260f2049ed6145a25 SHA-256: 30bb8255c41dbda89a50a96e3cc0050631bf3cf94c9fe36cbf02be9ad888e7aa

212 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The primary malicious URL identified is likely used to redirect users to a phishing or malware site. While no scripts were explicitly extracted, the presence of numerous external links suggests an attempt to lure users to malicious content, aligning with spearphishing tactics.

Machine Learning

Nyx PDF Classifier malicious score 0.9711

Heuristics 4

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.
ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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://ggtraff.ru/strik?utm_term=piedmont+public+schools+powerschool
- https://mijekuwovosi.weebly.com/uploads/1/3/4/3/134321571/501721.pdf
- https://xiworibamenu.weebly.com/uploads/1/3/4/7/134728691/7fe6bd478938e.pdf
- https://lijasefevofik.weebly.com/uploads/1/3/4/8/134889997/5d9e9511.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf07e1491241adc445f65/1606217855172/umich_physics_240_textbook.pdf
- https://s3.amazonaws.com/dadupawo/10699922418.pdf
- https://static1.squarespace.com/static/5fc07d836b97992eb55a0df7/t/5fc0e2953570fb44d123be31/1606476439859/t7_power_max_cost.pdf
- https://static1.squarespace.com/static/5fc37324df132613bbcddee0/t/5fc87c62b0f45b2a3d272254/1606974564047/syberia_2_game_length.pdf
- https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd0b0368bfc5186169c63e/1606224645516/pro_forma_balance_sheet_using_percent_of_sales_method.pdf
- https://s3.amazonaws.com/padoragog/39174313114.pdf
- https://static1.squarespace.com/static/5fc0dd9b8ef7301f8b108504/t/5fcbc70a1ef6d1662ff7cf9a/1607190284637/48489018583.pdf
- https://s3.amazonaws.com/lefemijip/20541506520.pdf
- https://static1.squarespace.com/static/5fc06b148139af037642cc0d/t/5fc35deaa97599144e62e9f4/1606639082582/jakanosul.pdf
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000b4c2.bin` `39ec99a0a9d6ed90821c8489eecc57506658027c4fc81a8ef23a5794a82adf7a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB4C2	5216 bytes
`font_01_sfnt_off0000c656.bin` `ab6c34a8bfd3fc872a8949097c5b36018cc0cb7e817bc0122685c91ade6b670a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC656	10492 bytes

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